Re: no pass-values calling?
Christian Heimes <[EMAIL PROTECTED]> writes: > Ben Finney wrote: > > The term "reference" is fine, since that's exactly how it works. > > One gets at an object via some reference, be it a name or some > > access into a container object. When an object has no more > > references to itself, it becomes a candidate for garbage > > collection. And so on. > > Thanks you, but I know exactly how Python works. I'm actually > developing CPython and PythonDotNET. Uh, okay. I didn't ask for you to flash your credentials, but if that is significant to you, be my guest. > Anyway your message doesn't help a newbie and it gives most > certainly the wrong impression. You are using words that have a > different meaning in other languages. If you explain Python w/o the > words variable, pointer, reference or call-by-value you have a much > better chance to explain it right. Trust me :) I've done my share of explaining of Python to people, and found "reference" to be exactly the right term to help the newbie understand what's happening and what they should expect. I agree with you on "variable", "pointer", and "call-by-value". Those don't describe how Python works, and thus only confuse the matter. Thus I avoid them, and correct newbies who appear to be getting confused because of those existing concepts. -- \"I don't accept the currently fashionable assertion that any | `\ view is automatically as worthy of respect as any equal and | _o__)opposite view." -- Douglas Adams | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list
Re: itertools.groupby
Tobiah <[EMAIL PROTECTED]> writes: > I tried doing this with a simple example, but noticed > that [].sort(func) passes two arguments to func, whereas > the function expected by groupby() uses only one argument. Use: [].sort(key=func) -- http://mail.python.org/mailman/listinfo/python-list
Re: import from question
Tobiah <[EMAIL PROTECTED]> writes: > This is a little surprising. So "from mod import *" really copies > all of the scalars into new variables in the local namespace. No. Nothing is copied. All the objects (remembering that in Python, *everything* is an object) created by the code in module 'mod' are given names in the current namespace. > I always ASSumed that the two forms of import were equivalent, but > that one form did away with the need to be explicit about the > namespace: mod.thing Obviously this is far from the case. Yes. In fact the main difference is in what namespace the module's objects are made available. -- \ "The way to build large Python applications is to componentize | `\ and loosely-couple the hell out of everything." -- Aahz | _o__) | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list
Generic string import like in strptime?
Hi there Is there a function like strptime, which takes a string and converts it into an array depending on a format string I provide. Like: >>> a = '3456\tblub-blib.0.9' >>> b = '%d\t%s-%s.%f' >>> c = mysticalfunction(a,b) >>> print c [3456,'blub','blib',0.9] Many thanks Andre -- http://mail.python.org/mailman/listinfo/python-list
Re: where do my python files go in linux?
Hi All,
Sorry for the late reply back, I had a busy weekend ... it seems there
is no clear way to do it and maybe that is why I was / am so confused.
Eventually I searched for *.py files, and like I said most apps seem
to install in /usr/share/{app} I believe that location is for data
only that is shared between users. But for simplicity's sake I put my
whole python application in there. It saves me setting a lot of paths
differently.
I made a symbolic link in /usr/bin that points to /usr/share/{app}/{app}.py
This all seems to work fine. When I am getting more experienced with
Debian / Ubuntu and linux overall, I will re-evaluate this and see if
I can improve it.
Thanks all for your answer,
- Jorgen
On Jan 14, 2008 4:30 PM, Nick Craig-Wood <[EMAIL PROTECTED]> wrote:
> Paul Boddie <[EMAIL PROTECTED]> wrote:
> > On 14 Jan, 08:47, "A.T.Hofkamp" <[EMAIL PROTECTED]> wrote:
> > >
> > > Rather than re-inventing the wheel, please have a look at distutils:
> > > http://docs.python.org/lib/module-distutils.html
> > >
> > > It does most if not all of the things you want to do.
> > > If you want something more advanced, read about eggs.
> >
> > Although distutils does some of the work needed by the inquirer, it
> > falls far short of what is needed to make a Debian package - that's
> > why you have the "new" Debian Python policy and why the authors
> > specifically refer to both distutils and setuptools in that document.
>
> It would be nice to have an equivalent to dh-make-perl which takes a
> CPAN module and makes a .deb directly.
>
> http://packages.debian.org/stable/devel/dh-make-perl
>
> What I usually do is
>
> python setup.py bdist_rpm
>
> Then use alien to convert the resulting .rpm into a .deb
>
> I don't think these create particularly policy compliant .debs but
> they are good enough for local usage.
>
> > Meanwhile, even stdeb [1] doesn't appear to completely automate the
> > production of Debian packages using distutils.
>
> Looks interesting though!
>
> > [1] http://stdeb.python-hosting.com/
>
> --
> Nick Craig-Wood <[EMAIL PROTECTED]> -- http://www.craig-wood.com/nick
> --
>
> http://mail.python.org/mailman/listinfo/python-list
>
--
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ANN: CaltrainPy 0.2
CaltrainPy is a Caltrain (http://caltrain.com/) schedule program and library written in Python. It uses Tkinter for GUI. What is new in version 0.2? - AM/PM indicators - train types - can be used as a module to parse Caltrain schedule - MIT License - setup.py Parsing of Caltrain schedule requires BeautifulSoup. The results can be returned as Python, HTML or JSON (python-json required). It is available on Cheeseshop, but unfortunately it does not seem to work correctly if installed with easy_install. Downloading and installing with: python setup.py install works ok. Blog post with screenshot here: http://www.heikkitoivonen.net/blog/2008/01/16/caltrainpy-02/ -- Heikki Toivonen -- http://mail.python.org/mailman/listinfo/python-list
anti-spam policy for c.l.py?
this list has been receiving increasing amounts of nasty OT spam messages for some time. are there any plans to prevent such messages from appearing on the list or to purge them retrospectively? _wolf -- http://mail.python.org/mailman/listinfo/python-list
Re: searching an XML doc
On Jan 15, 9:33 pm, Gowri <[EMAIL PROTECTED]> wrote:
> Hello,
>
> I've been reading about ElementTreee and ElementPath so I could use
> them to find the right elements in the DOM. Unfortunately neither of
> these seem to offer XPath like capabilities where I can find elements
> based on tag, attribute values etc. Are there any libraries which can
> give me XPath like functionality?
>
> Thanks in advance
Create your query like:
ns0 = '{http://a.b.com/phedex}'
query = '%srequest/%sstatus' % (ns0, ns0)
Also, although imperfect, some people have found this useful:
http://gflanagan.net/site/python/utils/elementfilter/elementfilter.py.txt
[CODE]
test = '''http://a.b.com/phedex";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="http://a.b.com/phedex requests.xsd">
T1_RAL_MSS
T2_London_ICHEP
T2_Southgrid_Bristol
/PrimaryDS1/ProcessedDS1/
Tier
/PrimaryDS2/
ProcessedDS2/Tier/block
'''
from xml.etree import ElementTree as ET
root = ET.fromstring(test)
ns0 = '{http://a.b.com/phedex}'
from rattlebag.elementfilter import findall, data
#http://gflanagan.net/site/python/utils/elementfilter/
elementfilter.py.txt
query0 = '%(ns)srequest/%(ns)sstatus' % {'ns': ns0}
query1 = '%(ns)srequest/%(ns)[EMAIL PROTECTED]"replicate"]/%
(ns)sitems' % {'ns': ns0}
query2 = '%(ns)[EMAIL PROTECTED]/%(ns)sstatus/%(ns)sapproved' %
{'ns': ns0}
print 'With ElementPath: '
print root.findall(query0)
print
print 'With ElementFilter:'
for query in [query0, query1, query2]:
print
print '+'*50
print 'query: ', query
print
for item in findall(root, query):
print 'item: ', item
print 'xml:'
ET.dump(item)
print '-'*50
print
print 'approved: ', data(root, query2)
[/CODE]
[OUTPUT]
With ElementPath:
[http://a.b.com/phedex}status at b95ad0>]
With ElementFilter:
++
query: {http://a.b.com/phedex}request/{http://a.b.com/phedex}status
item: http://a.b.com/phedex}status at b95ad0>
xml:
http://a.b.com/phedex";>
T1_RAL_MSS
T2_London_ICHEP
T2_Southgrid_Bristol
++
query: {http://a.b.com/phedex}request/{http://a.b.com/
[EMAIL PROTECTED]
=="replicate"]/{http://a.b.com/phedex}items
item: http://a.b.com/phedex}items at b95eb8>
xml:
http://a.b.com/phedex";>
/PrimaryDS1/ProcessedDS1/
Tier
/PrimaryDS2/
ProcessedDS2/Tier
/block
++
query: {http://a.b.com/[EMAIL PROTECTED]/{http://a.b.com/
phedex}status/
{http://a.b.com/phedex}approved
item: http://a.b.com/phedex}approved at b95cd8>
xml:
http://a.b.com/phedex";>T1_RAL_MSS
item: http://a.b.com/phedex}approved at b95cb0>
xml:
http://a.b.com/phedex";>T2_London_ICHEP
--
approved: ['T1_RAL_MSS', 'T2_London_ICHEP']
INFO End logging.
[/OUTPUT]
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Re: searching an XML doc
Hi Gerard, I don't know what to say :) thank you so much for taking time to post all of this. truly appreciate it :) -- http://mail.python.org/mailman/listinfo/python-list
using pyopengl 3.0.0b1 with py2exe
Hi !
How can I make an exe that use the new pyopengl 3.0.0b1 ???
I use py2exe 0.6.6
with the 3.0.0a6 version I have make it working by copying the egg and
by
forcing loading it at the start of the app
but it doesn't work with this version
py2exe correctly detect it and include it in the app but I get this
Traceback (most recent call last):
File "texas.py", line 8, in
File "zipextimporter.pyo", line 82, in load_module
File "OpenGL\GL\__init__.pyo", line 2, in
File "zipextimporter.pyo", line 82, in load_module
File "OpenGL\raw\GL\__init__.pyo", line 6, in
File "zipextimporter.pyo", line 82, in load_module
File "OpenGL\raw\GL\constants.pyo", line 7, in
File "zipextimporter.pyo", line 82, in load_module
File "OpenGL\platform\__init__.pyo", line 20, in
ImportError: No module named pkg_resources
if I add an unzipped copy of setuptools in my app folder, py2exe
include
pkg_resources but I get this
Traceback (most recent call last):
File "texas.py", line 8, in
File "zipextimporter.pyo", line 82, in load_module
File "OpenGL\GL\__init__.pyo", line 2, in
File "zipextimporter.pyo", line 82, in load_module
File "OpenGL\raw\GL\__init__.pyo", line 6, in
File "zipextimporter.pyo", line 82, in load_module
File "OpenGL\raw\GL\constants.pyo", line 7, in
File "zipextimporter.pyo", line 82, in load_module
File "OpenGL\platform\__init__.pyo", line 57, in
File "OpenGL\platform\__init__.pyo", line 53, in _load
RuntimeError: Unable to find an implementation for the 'win32' ('nt')
platform
if anybody ahs a solution
Seb
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Shed Skin (restricted) Python-to-C++ Compiler 0.0.26
Hi all, I have just released Shed Skin 0.0.26, with the following goodies: -Almost complete support for os.path (bootstrapped using Shed Skin) -Support for collections.defaultdict (completing collections) -Much improved support for the os module (though many methods remain) -Support for 5 of 7 last missing str methods -Added support for getopt.gnu_getopt (bootstrapped) -Improved support for locales -Optimized string addition (a+b+c..) -Much better documentation (tutorial) -Added a Debian package -Squashed many bugs -Moved to Google code hosting Please have a look at my latest blog entry for more details about the release, or visit the new Google code hosting site: http://shed-skin.blogspot.com http://shedskin.googlecode.com Thanks, Mark Dufour. -- "One of my most productive days was throwing away 1000 lines of code" - Ken Thompson -- http://mail.python.org/mailman/listinfo/python-list
Re: no pass-values calling?
On Wed, 16 Jan 2008 17:46:39 +1100, Ben Finney wrote: > Christian Heimes <[EMAIL PROTECTED]> writes: > >> Dennis Lee Bieber wrote: >> >Since all "variable" names in Python are references to objects, >> > anything accessed using a name is accessed by reference. >> >> Anybody using the terms variable, reference or call-by-value is most >> likely explaining Python the wrong way. > > The term "reference" is fine, since that's exactly how it works. One > gets at an object via some reference, be it a name or some access into a > container object. When an object has no more references to itself, it > becomes a candidate for garbage collection. And so on. The term "reference" *by itself* is fine, so long as there is no possibility of confusion with the very common concept of "call by reference" (or "pass by reference"). But since the Original Poster himself raised the question of whether Python is call by reference or call by value, that should be a great big warning flag to avoid the term "reference" until he's reset his brain. Python is not C, and if you talk about Python using C terminology without making it absolutely crystal clear that the semantics of that terminology is different in Python, then you'll just reinforce the O.P.'s misunderstandings. Python might have "references" in the generic sense, but in the specific sense that it is understood by most people with C/Pascal/Java/Perl experience, Python does not. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: anti-spam policy for c.l.py?
_wolf a écrit : > this list has been receiving increasing amounts of nasty OT spam > messages for some time. are there any plans to prevent such messages > from appearing on the list or to purge them retrospectively? Apart from checking posts headers and complaining about the relevant ISPs, there's not much you can do AFAIK. This is usenet, not a mailing-list. -- http://mail.python.org/mailman/listinfo/python-list
Re: no pass-values calling?
J. Peng a écrit : > On Jan 16, 2008 2:30 PM, Steven D'Aprano > <[EMAIL PROTECTED]> wrote: >> On Wed, 16 Jan 2008 13:59:03 +0800, J. Peng wrote: >> >>> Hi, >>> >>> How to modify the array passed to the function? I tried something like >>> this: >>> >> a >>> [1, 2, 3] >> def mytest(x): >>> ... x=[4,5,6] >> >> This line does NOT modify the list [1, 2, 3]. What it does is create a >> new list, and assign it to the name "x". It doesn't change the existing >> list. >> > > Sounds strange. > In perl This is Python, not Perl. Please follow the links provided by Steven and read carefully. -- http://mail.python.org/mailman/listinfo/python-list
Re: anti-spam policy for c.l.py?
-On [20080116 12:51], Bruno Desthuilliers ([EMAIL PROTECTED]) wrote: >Apart from checking posts headers and complaining about the relevant >ISPs, there's not much you can do AFAIK. This is usenet, not a mailing-list. It is both actually. python-list@python.org is linked to comp.lang.python due to a news gateway. -- Jeroen Ruigrok van der Werven / asmodai イェルーン ラウフロック ヴァン デル ウェルヴェン http://www.in-nomine.org/ | http://www.rangaku.org/ I accept that some things will never change, I've let your tiny minds magnify my agony... -- http://mail.python.org/mailman/listinfo/python-list
Re: no pass-values calling?
Hallöchen!
J. Peng writes:
> On Jan 16, 2008 2:30 PM, Steven D'Aprano
> <[EMAIL PROTECTED]> wrote:
>> On Wed, 16 Jan 2008 13:59:03 +0800, J. Peng wrote:
>>
>>> How to modify the array passed to the function? I tried
>>> something like this:
>>>
>> a
>>> [1, 2, 3]
>> def mytest(x):
>>> ... x=[4,5,6]
>>
>>
>> This line does NOT modify the list [1, 2, 3]. What it does is
>> create a new list, and assign it to the name "x". It doesn't
>> change the existing list.
>
> Sounds strange.
> In perl we can modify the variable's value like this way:
>
> $ perl -le '
>> $x=123;
>> sub test {
>> $x=456;
>> }
>> test;
>> print $x '
> 456
But here, it is a global name rather than a parameter. However, I
don't speak Perl.
Tschö,
Torsten.
--
Torsten Bronger, aquisgrana, europa vetus
Jabber ID: [EMAIL PROTECTED]
(See http://ime.webhop.org for further contact info.)
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Re: no pass-values calling?
On Jan 15, 2008 10:09 PM, J. Peng <[EMAIL PROTECTED]> wrote: > Hello, > > I saw this statement in Core Python Programming book, > > All arguments of function calls are made by reference, meaning that > any changes to these parameters within the function > affect the original objects in the calling function. Yes, that's generally correct. But you must be careful about what is meant by "changes to parameters". Assigning a new value to a parameter name (inside the function, a parameter is just a local variable) does not change the original object--it only rebinds the local variable to a new object. In the following function, a is rebound with an assignment statement, while b is mutated, i.e., changed, with an assignment statement. def f(a, b): a = 12 b.value = 14 Argument a will never be changed, while argument b will be. Python's argument passing semantics are extremely simple. It's the assignment statement that's tricky: some assignments mutate/change objects, and some only rebind names. > Does this mean there is not pass-values calling to a function in > python? only pass-reference calling? Thanks! Neither is quite true. Values are passed by binding parameter names to their corresponding arguments. This is similar to pass-by-reference in some cases (when the argument is mutated) but not in others (when the argument is not mutated). Thinking of it as pass-by-reference may help you to understand it, but bear in mind that Python's "references" may be rebound to new objects, which is quite different from the usual behavior of references. -- Neil Cerutti <[EMAIL PROTECTED]> -- http://mail.python.org/mailman/listinfo/python-list
Re: Python too slow?
On 16 Jan, 02:17, "Jaimy Azle" <[EMAIL PROTECTED]> wrote: > > Wow, serious... what you've done was really, really cool... :) In practice, not that cool. ;-) > I was expect there are nobody willing to do to have python runs Java > Language (such as PyPy) over CPython. Perhaps your javaclass does not work > just like as PyPy, but really... it is damned cool to get CPython execute > java byte-code, congratulations... Well, the limitations that stopped me working on it are listed on the page I referenced, so it wasn't that cool in the end. In fact, the project grew out of just wanting to inspect .class files and pull out method signatures, but it was so tempting to see whether Java bytecodes could be rewritten and run in a CPython environment. I think the benefits of running Java on CPython are significantly less than those had by running Python on the Java VM (or another VM). Firstly, who wants to write statically typed code which then runs on a virtual machine that can't take advantage of the type declarations? Secondly, isn't it just better to use a virtual machine with just-in- time compilation and all sorts of security mechanisms if you're wanting to write the Java code that, when compiled, can take advantage of all that stuff? In other words: what makes CPython a compelling VM for the Java programmer? My perspective now is that it's a lot more interesting to target Python for virtual machines other than the CPython one because that's where the performance and functionality benefits are most likely to be found. And the most important motivation for this: I prefer writing Python, not Java. ;-) Paul -- http://mail.python.org/mailman/listinfo/python-list
Re: Generic string import like in strptime?
On Jan 16, 2008 3:34 AM, Andre <[EMAIL PROTECTED]> wrote: > Hi there > > Is there a function like strptime, which takes a string and converts it > into an array depending on a format string I provide. Like: > >>> a = '3456\tblub-blib.0.9' > >>> b = '%d\t%s-%s.%f' > >>> c = mysticalfunction(a,b) > >>> print c > [3456,'blub','blib',0.9] No, not in the standard distribution of Python. In Python, you're expected to use appropriate string methods, or hold your nose and drag out the re module. There are some scanf-like libraries for Python available on the net, e.g., http://hkn.eecs.berkeley.edu/~dyoo/python/scanf/. None of them have become popular enough with Python users to make it into the standard distribution. An excellent tool that can be used in these cases is pyparsing, which is also not in the standard distribution. http://pyparsing.wikispaces.com/ -- Neil Cerutti <[EMAIL PROTECTED]> -- http://mail.python.org/mailman/listinfo/python-list
Re: Basic inheritance question
On Jan 15, 9:00 pm, Bruno Desthuilliers wrote: > Lie a écrit : > > > > > On Jan 7, 2:46 am, Bruno Desthuilliers > > <[EMAIL PROTECTED]> wrote: > >> Lie a écrit : > > >>> On Jan 5, 5:40 pm, [EMAIL PROTECTED] wrote: > Jeroen Ruigrok van der Werven wrote: > > Shouldn't this be: > > self.startLoc = start > > self.stopLoc = stop > Thanks! Of course it should. Old Java habits die slowly. > >>> No, seriously it isn't Java habits only, most other languages wouldn't > >>> need explicit calling of class name. > >> Where is the "explicit calling of class name" exactly ? > > > Perhaps I was a bit tired when writing that (I wouldn't understand > > what I wrote if I were you)... what I meant is most other languages > > doesn't usually enforce us to explicitly state the containing class > > name, which in python is generally called "self". > > 'self' (or whatever you name it) is not the "containing class name", Current instance is what I meant, thanks for pointing out the incorrect term I used. > it's the first argument of the function - which usually happens to be > the current instance when the function is used as a method. And that's the point, self (or anything you name it) is almost always the current instance and that makes it functionally the same as Me and this in VB and Java. > > Most other languages > > 1) automatically assign the containing class' object > > s/containing class' object/current instance/ > > > in a keyword > > (Java: this, VB: Me) behind the screen, > > That's not very far from what a Python method object does - > automatically assign the current instance to something. The difference > is that Python uses functions to implement methods (instead of having > two distinct contructs), so the only reliable way to "inject" the > reference to the current instance is to pass it as an argument to the > function (instead of making it pop from pure air). It isn't very far, but Python makes it obvious about the assignment (not behind the screen). > There are some benefits to this solution. One of them is the ability to > dynamically assign functions as methods. So if you do have some > function taking an object as first argument, you can easily turn it into > a method. Indeed, many languages doesn't allow dynamic assignment of function which makes having an automatic assignment of current instance to Me/ this possible and with minimal harm. > > and 2) automatically searches > > variable name in both the local variable table and the containing > > class variable table (so to refer to a class variable named var from a > > method inside the class, we only need to write var, not self.var as in > > python). > > This - as you know - cannot work well with Python's scoping rules and > dynamicity. Anyway, implicit object reference is definitively a > BadThing(tm) wrt/ readbility, specially with multiparadigm languages > (like Python or C++). Why do you think s many C++ shops impose the > m_something naming scheme ? Implicit object reference for the containing class has little harm, if a class is so complex that there are more than 10 class-level variable, then it is obvious that that class needs to be fragmented to smaller classes. Remembering less than 10 variable and avoiding naming collision among just 10 variable is not hard (and 10 is really too many, most classes should only use 2-4 variables), especially if you have a good IDE that employs Intellisense-like technology (IDLE has it). And it is always a Bad Thing(tm) to use the same name for two variable in the class and in function (which is the main and only source of possible ambiguity) in ANY language, even in Python. > Anyway, I actually know 3 languages (4 if C# works the same) that has > this implicit 'this' (or whatever the name) 'feature', and at least 5 > that don't. So I'm not sure that the "most other languages" qualifier > really applies to point 2 !-) What's this 5 languages? Are they a mainstream, high-level languages or lesser known, low-level languages? C-family, Java, and Basic are the Big Three of high-level programming language. > > In VB, Me is extremely rarely used, > > I used to systematically use it - like I've always systematically used > 'this' in C++ and Java. And that is what reduces readability. A proficient VB/C/Java programmer would frown upon the extra, unneeded garbage as they thought it was clear already that the variable refers to a class-level variable. It is a different story if, like Python, the use of self is enforced by the language, the self wouldn't be viewed as extra unnecessary garbage. > > in Python, self is all > > over the place. Well, there is positive and negative to both sides, > > convenience in VB, and flexibility in Python. > > As far as I'm concerned, there's *no* positive point in implicit object > reference, and there has never been (and before some paranoid nutcase > around accuse me of overzealous biggotry : I already held this very same > opinion years before
Re: no pass-values calling?
On Jan 16, 1:21 pm, "Neil Cerutti" <[EMAIL PROTECTED]> wrote:
> On Jan 15, 2008 10:09 PM, J. Peng <[EMAIL PROTECTED]> wrote:
>
> > Hello,
>
> > I saw this statement in Core Python Programming book,
>
> > All arguments of function calls are made by reference, meaning that
> > any changes to these parameters within the function
> > affect the original objects in the calling function.
>
> Yes, that's generally correct. But you must be careful about what is
> meant by "changes to parameters". Assigning a new value to a parameter
> name (inside the function, a parameter is just a local variable) does
> not change the original object--it only rebinds the local variable to
> a new object.
>
> In the following function, a is rebound with an assignment statement,
> while b is mutated, i.e., changed, with an assignment statement.
>
> def f(a, b):
> a = 12
> b.value = 14
>
> Argument a will never be changed, while argument b will be. Python's
> argument passing semantics are extremely simple. It's the assignment
> statement that's tricky: some assignments mutate/change objects, and
> some only rebind names.
>
> > Does this mean there is not pass-values calling to a function in
> > python? only pass-reference calling? Thanks!
>
> Neither is quite true. Values are passed by binding parameter names to
> their corresponding arguments. This is similar to pass-by-reference in
> some cases (when the argument is mutated) but not in others (when the
> argument is not mutated). Thinking of it as pass-by-reference may help
> you to understand it, but bear in mind that Python's "references" may
> be rebound to new objects, which is quite different from the usual
> behavior of references.
>
> --
> Neil Cerutti <[EMAIL PROTECTED]>
So basically the scope is the reason for confusion a lot of the time?
def some_name():
alist = [5]
bint = 5
cstring = '5'
ddictionary = {0:5}
def other_name(alist, bint, cstring, ddictionary):
alist = 4
bint = 4
cstring = '4'
ddictionary = 4
print "other_name:",
print alist, bint, cstring, ddictionary
def another_name(alist, bint, cstring, ddictionary):
alist[0] = 3
# bint cannot be changed it is immutable
# cstring cannot be changed it is immutable
ddictionary[0] = 3
print "another_name:",
print alist, bint, cstring, ddictionary
another_name(alist, bint, cstring, ddictionary)
other_name(alist, bint, cstring, ddictionary)
print "our entries are now:",
print alist, bint, cstring, ddictionary
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Re: no pass-values calling?
On Jan 16, 2008 7:58 AM, <[EMAIL PROTECTED]> wrote: > On Jan 16, 1:21 pm, "Neil Cerutti" <[EMAIL PROTECTED]> wrote: > > In the following function, a is rebound with an assignment statement, > > while b is mutated, i.e., changed, with an assignment statement. > > > > def f(a, b): > > a = 12 > > b.value = 14 > > > > Argument a will never be changed, while argument b will be. Python's > > argument passing semantics are extremely simple. It's the assignment > > statement that's tricky: some assignments mutate/change objects, and > > some only rebind names. > > So basically the scope is the reason for confusion a lot of the time? No, my hypothesis is that Python's assignment statement semantics are the tricky part--once you understand them, the utter simplicity of Python's argument passing semantics will be evident. -- Neil Cerutti <[EMAIL PROTECTED]> -- http://mail.python.org/mailman/listinfo/python-list
Re: Why this apparent assymetry in set operations?
Steven D'Aprano wrote: > On Tue, 15 Jan 2008 11:25:25 -0500, Colin J. Williams wrote: > >> I'm sorry, there appears to be a bug: # tSet.py >> import sets >> s1= sets.Set([1, 2, 3]) >> s1.union_update([3, 4,5]) >> print(s1) >> s2= sets.Set([6, 7, 8]) >> s1 |+ s2 # This fails: >> exceptions.TypeError: bad operand type for unary +: 'Set' > > And so it should fail. Did you mean |= instead of |+ ? > > Thanks, keyboard error. Colin W. -- http://mail.python.org/mailman/listinfo/python-list
plz help how to print python variable using os.system()
hi all
i m new to python and i have a problem of printing python
variable using os.system() in bash
!/usr/bin/env python
var = "/home/anonymous"
os.system("echo $var)
it is not working..
i want to print string using os.system() plz help
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Unknown cause to error (new to python)
Hi, I am having to compile a standalone version of python for the web server I use (they don't allow access to /usr/bin/python). I posted earlier about a GLib error, but I have fixed that now. I am very close to getting this to work, but I am getting some weird errors. File "/home/vminds/public_html/torrents/python/lib/python2.2/socket.py", line 41, in ? File "/home/vminds/public_html/torrents/python/lib/python2.2/httplib.py", line 71, in ? File "/home/vminds/public_html/torrents/TF_BitTornado/BitTornado/zurllib.py", line 4, in ? File "/home/vminds/public_html/torrents/TF_BitTornado/BitTornado/download_bt1.py", line 4, in ? File "/home/vminds/public_html/torrents/TF_BitTornado/btphptornado.py", line 15, in ? I am using 2.2 for compatibility purposes. Thanks, Brandon -- http://mail.python.org/mailman/listinfo/python-list
Re: plz help how to print python variable using os.system()
Hi,
On Wed, 16 Jan 2008 05:29:08 -0800 (PST), [EMAIL PROTECTED] said:
> var = "/home/anonymous"
> os.system("echo $var)
os.system("echo %s" % var)
Lutz
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Re: no pass-values calling?
> > No, my hypothesis is that Python's assignment statement semantics are > the tricky part--once you understand them, the utter simplicity of > Python's argument passing semantics will be evident. Indeed, I find the simple nature of it and the fact things tend not to change is extremely useful. It is an advantage to have rules to abide by that cannot be ignored or by-passed. -- http://mail.python.org/mailman/listinfo/python-list
Re: Interesting Thread Gotcha
"Hendrik van Rooyen" <[EMAIL PROTECTED]> wrote: > It would have been nice, however, to have gotten something like: > > TypeError - This routine needs a tuple. > > instead of the silent in line calling of the routine in question, > while failing actually to start a new thread. Given that the start_new_thread function never actually got called, what code exactly do you expect to complain about the absence of a tuple? > > It seems to act no different from plain old: > > kbd_driver (port_q,kbd_q) > > Is it worth the trouble of learning how to submit a bug report? On your own code? There doesn't appear to be a bug in anyone else's code here. -- http://mail.python.org/mailman/listinfo/python-list
Re: Unknown cause to error (new to python)
Brandon Perry wrote: > Hi, I am having to compile a standalone version of python for the web > server I use (they don't allow access to /usr/bin/python). I posted > earlier about a GLib error, but I have fixed that now. I am very close > to getting this to work, but I am getting some weird errors. > > File "/home/vminds/public_html/torrents/python/lib/python2.2/socket.py", > line 41, in ? > File "/home/vminds/public_html/torrents/python/lib/python2.2/httplib.py", > line 71, in ? File > "/home/vminds/public_html/torrents/TF_BitTornado/BitTornado/zurllib.py", > line 4, in ? File > "/home/vminds/public_html/torrents/TF_BitTornado/BitTornado/download_bt1.py", > line 4, in ? File > "/home/vminds/public_html/torrents/TF_BitTornado/btphptornado.py", line > 15, in ? > > I am using 2.2 for compatibility purposes. I don't see no error - is that all stacktrace you get? Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: Interesting Thread Gotcha
Hendrik van Rooyen wrote: > Absolutely! - well spotted! This is no threading problem at all; not even a syntax problem. If you don't know exactly what start_new_thread and kbd_driver functions do it's impossible to tell if your code does what is intended. > It would have been nice, however, to have gotten something like: > > TypeError - This routine needs a tuple. > > instead of the silent in line calling of the routine in question, > while failing actually to start a new thread. Exactly which part of the code should give you this warning? > Is it worth the trouble of learning how to submit a bug report? For your problem not, IMHO, as a bug report for it will be closed quickly. Regards, Björn -- BOFH excuse #330: quantum decoherence -- http://mail.python.org/mailman/listinfo/python-list
Re: anti-spam policy for c.l.py?
Jeroen Ruigrok van der Werven a écrit : > -On [20080116 12:51], Bruno Desthuilliers ([EMAIL PROTECTED]) wrote: >> Apart from checking posts headers and complaining about the relevant >> ISPs, there's not much you can do AFAIK. This is usenet, not a mailing-list. > > It is both actually. python-list@python.org is linked to comp.lang.python due > to a news gateway. Yes, I know - but the OP explicitely mentionned c.l.py (re-read the title), not the ML. -- http://mail.python.org/mailman/listinfo/python-list
list classes in package
Hi All, I've trying to develop one Python application, and neet to solve one problem. I need to list all classes defined in one package (not module!). Could anybody please show me more convinient (correct) way to implement this? Thanks, Dmitry -- http://mail.python.org/mailman/listinfo/python-list
Re: Unknown cause to error (new to python)
Brandon Perry a écrit : > Hi, I am having to compile a standalone version of python for the web > server I use (they don't allow access to /usr/bin/python). I posted > earlier about a GLib error, but I have fixed that now. I am very close > to getting this to work, but I am getting some weird errors. > > File "/home/vminds/public_html/torrents/python/lib/python2.2/socket.py", > line 41, in ? > File "/home/vminds/public_html/torrents/python/lib/python2.2/httplib.py", > line 71, in ? > File "/home/vminds/public_html/torrents/TF_BitTornado/BitTornado/zurllib.py", > line 4, in ? > File > "/home/vminds/public_html/torrents/TF_BitTornado/BitTornado/download_bt1.py", > line 4, in ? > File "/home/vminds/public_html/torrents/TF_BitTornado/btphptornado.py", line > 15, in ? Sorry but my crystal ball is broken. Please post the *whole* traceback. -- http://mail.python.org/mailman/listinfo/python-list
Re: Basic inheritance question
Lie wrote: > [EMAIL PROTECTED]> wrote: >> I used to systematically use it - like I've always systematically >> used 'this' in C++ and Java. > > And that is what reduces readability. IMHO not, IOPHO not. This is the nth time (n >> 1) this discussion comes up here. If I have learned one thing from those very lengthy discussions, it's that Python's "self" handling is not going to change. > A proficient VB/C/Java programmer would frown upon the extra, > unneeded garbage as they thought it was clear already that the > variable refers to a class-level variable. C programmers surely have no opinion concerning C because it has no native classes. Personally, I've seen many C++ programs with complex class designs where it definitely helps to consistently use "this->". I cannot remember all local (and global) variables in bigger methods. > There is one major positive point: convenience and shorter code. > (isn't that two?) Shorter code is not per se positive, neither is it convenient. If it was, everyone would use perl. Regards, Björn -- BOFH excuse #109: The electricity substation in the car park blew up. -- http://mail.python.org/mailman/listinfo/python-list
Re: UTF-8 in basic CGI mode
coldpizza <[EMAIL PROTECTED]> wrote:
>I am using this 'word' variable like this:
>
>print u'' % (word)
>
>and apparently this causes exceptions with non-ASCII strings.
>
>I've also tried this:
>print u'' %
>(word.encode('utf8'))
>but I still get the same UnicodeDecodeError..
Your 'word' is a byte string (presumably UTF8 encoded). When python
is asked to insert a byte string into a unicode string (as you are
doing with the % operator, but the same applies to concatenation
with the + operator) it attempts to convert the byte string into
unicode. And the default encoding is 'ascii', and the ascii codec
takes a very strict view about what an ASCII character is -- and
that is that only characters below 128 are ASCII.
To get it to work, you need to *decode* word. It is already UTF8
(or something) encoded. Under most circumstances, use encode() to
turn unicode strings to byte strings, and decode() to go in the
other direction.
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-- Arthur C. Clarke
her nu becomeþ se bera eadward ofdun hlæddre heafdes bæce bump bump bump
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Re: Python help for a C++ programmer
Hi, On Wed, 16 Jan 2008 06:23:10 -0800 (PST), "mlimber" <[EMAIL PROTECTED]> said: > I'm writing a text processing program to process some survey results. > I'm familiar with C++ and could write it in that, but I thought I'd > try out Python. I've got a handle on the file I/O and regular > expression processing, but I'm wondering about building my array of > classes (I'd probably use a struct in C++ since there are no methods, > just data). You could try something like this. #!/usr/bin/env python class Response: def __init__(self, name, age, iData, sData): self.name = name self.age = age self.iData = iData self.sData = sData def sourceOfResponses(): return [["you", 42, [1, 2, 3], ["foo", "bar", "baz"]], ["me", 23, [1, 2, 3], ["ham", "spam", "eggs"]]] if __name__ == "__main__": responses = [] for input in sourceOfResponses: response = Response(input.name, input.age, input.iData, input.sData) reponses.append(response) Lutz -- GnuPG Key: 1024D/6EBDA359 1999-09-20 Key fingerprint = 438D 31FC 9300 CED0 1CDE A19D CD0F 9CA2 6EBD A359 http://dev-random.dnsalias.net/0x6EBDA35.asc http://pgp.cs.uu.nl/stats/6EBDA359.html -- http://mail.python.org/mailman/listinfo/python-list
Re: Python help for a C++ programmer
On Jan 16, 2008 9:23 AM, mlimber <[EMAIL PROTECTED]> wrote:
> I'm writing a text processing program to process some survey results.
> I'm familiar with C++ and could write it in that, but I thought I'd
> try out Python. I've got a handle on the file I/O and regular
> expression processing, but I'm wondering about building my array of
> classes (I'd probably use a struct in C++ since there are no methods,
> just data).
>
> I want something like (C++ code):
>
> struct Response
> {
>std::string name;
>int age;
>int iData[ 10 ];
>std::string sData;
> };
>
> // Prototype
> void Process( const std::vector& );
>
> int main()
> {
>std::vector responses;
>
>while( /* not end of file */ )
>{
> Response r;
>
> // Fill struct from file
> r.name = /* get the data from the file */;
> r.age = /* ... */;
> r.iData[0] = /* ... */;
> // ...
> r.sData = /* ... */;
> responses.push_back( r );
>}
>
> // Do some processing on the responses
> Process( responses );
> }
>
> What is the preferred way to do this sort of thing in Python?
It depends on the format of your data (Python provides lots of
shortcuts for handling lots of kinds of data), but perhaps something
like this, if you do all the parsing manually:
class Response(object):
def __init__(self, extern_rep):
# parse or translate extern_rep into ...
self.name = ...
self.age = ...
# Use a dictionary instead of parallel lists.
self.data = {...}
def process(self):
# Do what you need to do.
fstream = open('thedatafile')
for line in fstream:
# This assumes each line is one response.
Response(line).process()
--
Neil Cerutti <[EMAIL PROTECTED]>
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Python help for a C++ programmer
I'm writing a text processing program to process some survey results.
I'm familiar with C++ and could write it in that, but I thought I'd
try out Python. I've got a handle on the file I/O and regular
expression processing, but I'm wondering about building my array of
classes (I'd probably use a struct in C++ since there are no methods,
just data).
I want something like (C++ code):
struct Response
{
std::string name;
int age;
int iData[ 10 ];
std::string sData;
};
// Prototype
void Process( const std::vector& );
int main()
{
std::vector responses;
while( /* not end of file */ )
{
Response r;
// Fill struct from file
r.name = /* get the data from the file */;
r.age = /* ... */;
r.iData[0] = /* ... */;
// ...
r.sData = /* ... */;
responses.push_back( r );
}
// Do some processing on the responses
Process( responses );
}
What is the preferred way to do this sort of thing in Python?
Thanks in advance! --M
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Re: Python help for a C++ programmer
> I want something like (C++ code):
>
> struct Response
> {
>std::string name;
>int age;
>int iData[ 10 ];
>std::string sData;
> };
>
> // Prototype
> void Process( const std::vector& );
>
> int main()
> {
>std::vector responses;
>
>while( /* not end of file */ )
>{
> Response r;
>
> // Fill struct from file
> r.name = /* get the data from the file */;
> r.age = /* ... */;
> r.iData[0] = /* ... */;
> // ...
> r.sData = /* ... */;
> responses.push_back( r );
>}
>
> // Do some processing on the responses
> Process( responses );
> }
>
> What is the preferred way to do this sort of thing in Python?
Without knowing more about the details involved with parsing the
file, here's a first-pass whack at it:
class Response(object):
def __init__(self, name, age, iData, sData):
self.name = name
self.age = age
self.iData = iData
self.sData = sData
def __repr__(self):
return '%s (%s)' % self.name
def parse_response_from_line(line):
name, age, iData, sData = line.rstrip('\n').split('\t')
return Response(name, age, iData, sData)
def process(response):
print 'Processing %r' % response
responses = [parse_response_from_line(line)
for line in file('input.txt')]
for response in responses:
process(response)
That last pair might be condensed to just
for line in file('input.txt'):
process(parse_response_from_line(line))
Things get a bit hairier if your input is multi-line. You might
have to do something like
def getline(fp):
return fp.readline().rstrip('\n')
def response_generator(fp):
name = None
while name != '':
name = getline(fp)
age = getline(fp)
iData = getline(fp)
sData = getline(fp)
if name and age and iData and sData:
yield Response(name, age, iData, sData)
fp = file('input.txt')
for response in response_generator(fp):
process(response)
which you can modify accordingly.
-tkc
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Paramiko/SSH blues....
I am using paramiko to do an SFTP file transfer... I was able to connect to the remote server using an SFTP client I have just to make sure that username and password are working.. But when i try to connect using this script it fails **hostname, username and password are declared. # now, connect and use paramiko Transport to negotiate SSH2 across the connection sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.connect((hostname, port)) t = paramiko.Transport(sock) event = threading.Event() t.start_client(event) event.wait(15) if not t.is_active(): print 'SSH negotiation failed.' sys.exit(1) else: print "SSH negotiation sucessful" event.clear() t.auth_password(username=username, password=password,event=event) if not t.is_authenticated(): print "not authenticated" output: SSH negotiation successful not authenticated -- http://mail.python.org/mailman/listinfo/python-list
Re: Basic inheritance question
Lie a écrit : > On Jan 15, 9:00 pm, Bruno Desthuilliers [EMAIL PROTECTED]> wrote: >> Lie a écrit : >> >> >> >>> On Jan 7, 2:46 am, Bruno Desthuilliers >>> <[EMAIL PROTECTED]> wrote: Lie a écrit : (snip) > No, seriously it isn't Java habits only, most other languages wouldn't > need explicit calling of class name. Where is the "explicit calling of class name" exactly ? >>> >>> Perhaps I was a bit tired when writing that (I wouldn't understand >>> what I wrote if I were you)... what I meant is most other languages >>> doesn't usually enforce us to explicitly state the containing class >>> name, which in python is generally called "self". >> >> 'self' (or whatever you name it) is not the "containing class name", > > Current instance is what I meant, thanks for pointing out the > incorrect term I used. > >> it's the first argument of the function - which usually happens to be >> the current instance when the function is used as a method. > > And that's the point, self (or anything you name it) is almost always > the current instance # this is a plain function. In this function, # 'obj' can be whatever that happens to have a (numeric) # 'stuff' attribute def func(obj, arg): return (obj.stuff + arg) / 2.0 # this is a class with an instance attribute 'stuff' class Foo(object): def __init__(self, bar): self.stuff = bar + 42 # this is another (mostly unrelated) class # with a class attribute 'stuff' class Bar(object): stuff = 42 # this is a dummy container class: class Dummy(object): pass # now let's play: import new d = Dummy() d.stuff = 84 print func(d, 1) d.baaz = new.instancemethod(func, d, type(d)) print d.baaz(2) f = Foo(33) print func(f, 3) Foo.baaz = func f.baaz(4) print func(Bar, 5) Bar.baaz = classmethod(func) Bar.baaz(6) > and that makes it functionally the same as Me and > this in VB and Java. Depends on the context, cf above !-) >>> Most other languages >>> 1) automatically assign the containing class' object >> s/containing class' object/current instance/ >> >>> in a keyword >>> (Java: this, VB: Me) behind the screen, > >> That's not very far from what a Python method object does - >> automatically assign the current instance to something. The difference >> is that Python uses functions to implement methods (instead of having >> two distinct contructs), so the only reliable way to "inject" the >> reference to the current instance is to pass it as an argument to the >> function (instead of making it pop from pure air). > > It isn't very far, but Python makes it obvious about the assignment > (not behind the screen). Exactly. And given both the simplicity of the solution and what it let you do, that's a *very* GoodThing(tm) IMHO. (snip) >>> and 2) automatically searches >>> variable name in both the local variable table and the containing >>> class variable table (so to refer to a class variable named var from a >>> method inside the class, we only need to write var, not self.var as in >>> python). >> This - as you know - cannot work well with Python's scoping rules and >> dynamicity. Anyway, implicit object reference is definitively a >> BadThing(tm) wrt/ readbility, specially with multiparadigm languages >> (like Python or C++). Why do you think s many C++ shops impose the >> m_something naming scheme ? > > Implicit object reference for the containing class has little harm, if > a class is so complex that there are more than 10 class-level > variable, then it is obvious that that class needs to be fragmented to > smaller classes. Not necessarily. There are general rules (like 'keep your classes small and focused', which I wholefully agree with), there are guidelines (like 'more than 10 member variables might smell like refactoring), and there's real life, where one very often faces classes that have much more than 10 member variables and still are as small and focused as possible. > Remembering less than 10 variable and avoiding naming > collision among just 10 variable is not hard (and 10 is really too > many, most classes should only use 2-4 variables), I really doubt you'll be able to write any working non-trivial software trying to strictly follow this rule. > especially if you > have a good IDE that employs Intellisense-like technology (IDLE has > it). IDLE is certainly not a "good IDE" in my book. > And it is always a Bad Thing(tm) to use the same name for two > variable in the class and in function (which is the main and only > source of possible ambiguity) in ANY language, even in Python. Ho, yes Like, this would be bad ? class Person(object): def __init__(self, firstname, lastname, birthdate, gender): self.firstname = firstname self.lastname = lastname self.birthdate = birthdate self.gender = gender C'mon, be serious. It's often hard enough to come with sensible names, why would one have to find synonyms too ? Try to come with something more readable than the above, and let us kn
MSI read support in msilib?
Hi The introduction from the msilib documentation in python 2.5 claims it supports reading an msi. However on the Record class there is only a GetFieldCount() method and some Set*() methods. I was expecting to see GetString() and GetInteger() methods to be able to read the values. Maybe I'm missing something? Is there an other way to read the data of a record? Regards Floris -- http://mail.python.org/mailman/listinfo/python-list
Re: list classes in package
Dmitry wrote: > Hi All, > > I've trying to develop one Python application, and > neet to solve one problem. I need to list all classes defined in one > package (not module!). > > Could anybody please show me more convinient (correct) way to > implement this? Look at the module inspect and it's predicates. Something like for name in dir(module_or_package): if inspect.isclass(getattr(module_or_package, name)): print "%s is a class" % name Diez -- http://mail.python.org/mailman/listinfo/python-list
paramiko
I am using paramiko to do an SFTP file transfer... I was able to connect to the remote server using an SFTP client I have just to make sure that username and password are working.. This is the code. # now, connect and use paramiko Transport to negotiate SSH2 across the connection sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.connect((hostname, port)) t = paramiko.Transport(sock) event = threading.Event() t.start_client(event) event.wait(15) if not t.is_active(): print 'SSH negotiation failed.' sys.exit(1) else: print "SSH negotiation sucessful" event.clear() t.auth_password(username=username, password=password,event=event) if not t.is_authenticated(): print "not authenticated" output: SSH negotiation successful not authenticated Tarun Waterstone Capital Management 2 Carlson Parkway, Suite 260 Plymouth, MN 55447 Direct: 952-697-4123 Cell:612-205-2587 Disclaimer This e-mail and any attachments is confidential and intended solely for the use of the individual(s) to whom it is addressed. Any views or opinions presented are solely those of the author and do not necessarily represent those of Waterstone Capital Management, L.P and affiliates. If you are not the intended recipient, be advised that you have received this e-mail in error and that any use, dissemination, printing, forwarding or copying of this email is strictly prohibited. Please contact the sender if you have received this e-mail in error. You should also be aware that e-mails are susceptible to interference and you should not assume that the contents of this e-mail originated from the sender above or that they have been accurately reproduced in their original form. Waterstone Capital Management, L.P. and affiliates accepts no responsibility for information, or errors or omissions in this e-mail or use or misuse thereof. If in doubt, please verify the authenticity with the sender. -- http://mail.python.org/mailman/listinfo/python-list
Re: no pass-values calling?
J. Peng wrote:
> Sounds strange.
> In perl we can modify the variable's value like this way:
>
> $ perl -le '
>> $x=123;
>> sub test {
>> $x=456;
>> }
>> test;
>> print $x '
> 456
Not all that strange. The Python equivalent is
x=123
sub test()
global x
x=456
test()
print x
Python assignment works by binding an object with a name in a
namespace. I suspect that perl does something similar, and the
differences are in the rules about which namespace to use.
Mel.
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Re: Python help for a C++ programmer
mlimber a écrit :
> I'm writing a text processing program to process some survey results.
> I'm familiar with C++ and could write it in that, but I thought I'd
> try out Python. I've got a handle on the file I/O and regular
> expression processing,
FWIW, and depending on your text format, there may be better solutions
than regexps.
> but I'm wondering about building my array of
> classes (I'd probably use a struct in C++ since there are no methods,
> just data).
If you have no methods and you're sure you won't have no methods, then
just use a dict (name-indexed record) or a tuple (position-indexed record).
> I want something like (C++ code):
>
> struct Response
> {
>std::string name;
>int age;
>int iData[ 10 ];
>std::string sData;
> };
>
> // Prototype
> void Process( const std::vector& );
>
> int main()
> {
>std::vector responses;
>
>while( /* not end of file */ )
>{
> Response r;
>
> // Fill struct from file
> r.name = /* get the data from the file */;
> r.age = /* ... */;
> r.iData[0] = /* ... */;
> // ...
> r.sData = /* ... */;
> responses.push_back( r );
>}
>
> // Do some processing on the responses
> Process( responses );
> }
>
> What is the preferred way to do this sort of thing in Python?
# assuming you're using a line-oriented format, and not
# worrying about exception handling etc...
def extract(line):
data = dict()
data['name'] = # get the name
data['age'] = # get the age
data['data'] = # etc...
return data
def process(responses):
# code here
if name == '__main__':
import sys
path = sys.argv[1]
responses = [extract(line) for line in open(path)]
process(response)
If you have a very huge dataset, you may want to either use tuples
instead of dicts (less overhead) and/or use a more stream-oriented
approach using generators - if applyable of course (that is, if you
don't need to extract all results before processing)
HTH
--
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Re: Interesting Thread Gotcha
Hendrik van Rooyen wrote: > "Dan" wrote: > > >> >>> keyboard_thread = thread.start_new_thread(kbd_driver (port_q,kbd_q)) >> >> Needs to be >> >>> keyboard_thread = thread.start_new_thread(kbd_driver, (port_q,kbd_q)) >> >> Commas are important! >> >> -Dan > > Absolutely! - well spotted! > > As the first correct respondent, you win the freedom to spend a week in > Naboomspruit at your own expense. > > It would have been nice, however, to have gotten something like: > > TypeError - This routine needs a tuple. > > instead of the silent in line calling of the routine in question, > while failing actually to start a new thread. You can't prevent the silent inline-calling - otherwise, how would you do this: def compute_thread_target(): def target(): pass return target thread.start_new_thread(compute_thread_target()) Of course start_new_thread could throw an error if it got nothing callable as first argument. No idea why it doesn't. Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: error/warning color customization in interactive console?
On 2008-01-16, yhvh <[EMAIL PROTECTED]> wrote: > Is it possible to output error messages in a different color? > I'm using Terminal on Gnome. >>> print "\033[1;31mHello\033[0m There!" Some reading: http://en.wikipedia.org/wiki/ANSI_escape_code http://www.ioncannon.net/ruby/101/fun-with-ansi-escape-codes/ Also, you might look at sys.excepthook to colorize an uncaught exception, and PYTHONSTARTUP to load code automagically before an interactive session. Ian -- http://mail.python.org/mailman/listinfo/python-list
Re: Generic string import like in strptime?
On Jan 16, 8:34 am, Andre <[EMAIL PROTECTED]> wrote: > Hi there > > Is there a function like strptime, which takes a string and converts it > into an array depending on a format string I provide. Like:>>> a = > '3456\tblub-blib.0.9' > >>> b = '%d\t%s-%s.%f' > >>> c = mysticalfunction(a,b) > >>> print c > > [3456,'blub','blib',0.9] Use regular expressions: see http://docs.python.org/lib/node49.html -- Paul Hankin -- http://mail.python.org/mailman/listinfo/python-list
Re: list classes in package
2008/1/16, Diez B. Roggisch <[EMAIL PROTECTED]>:
> Dmitry wrote:
>
> > Hi All,
> >
> > I've trying to develop one Python application, and
> > neet to solve one problem. I need to list all classes defined in one
> > package (not module!).
> >
> > Could anybody please show me more convinient (correct) way to
> > implement this?
>
> Look at the module inspect and it's predicates. Something like
>
>
> for name in dir(module_or_package):
> if inspect.isclass(getattr(module_or_package, name)):
>print "%s is a class" % name
>
>
> Diez
> --
> http://mail.python.org/mailman/listinfo/python-list
>
You should be able to adapt this one. You need to pass a directory to
it (warning: directory names including dots will cause you errors):
import os
import sys
import pyclbr
def pkg_modules(package):
return filter(lambda x: x.endswith(".py"), os.listdir(package))
def module_classes(module):
dict = pyclbr.readmodule_ex(module, [])
objs = dict.values()
objs.sort(lambda a, b: cmp(getattr(a, 'lineno', 0),
getattr(b, 'lineno', 0)))
print module
for obj in objs:
if isinstance(obj, pyclbr.Class):
print " class %s %s line: %d" % (obj.name, obj.super, obj.lineno)
def pkg_classes(package):
for module in pkg_modules(package):
module_classes("%s.%s" % (package, module[:-3]))
if __name__ == "__main__":
pkg_classes(sys.argv[1])
--
-- Guilherme H. Polo Goncalves
--
http://mail.python.org/mailman/listinfo/python-list
Re: Unknown cause to error (new to python)
Sorry, this is all I can get. :-( This isn't my webserver, so the only error logs I get are what they give me. I guess I will just have to keep working at it. Thanks for looking at it though, Brandon On Wed, 2008-01-16 at 15:12 +0100, Bruno Desthuilliers wrote: > Brandon Perry a écrit : > > Hi, I am having to compile a standalone version of python for the web > > server I use (they don't allow access to /usr/bin/python). I posted > > earlier about a GLib error, but I have fixed that now. I am very close > > to getting this to work, but I am getting some weird errors. > > > > File "/home/vminds/public_html/torrents/python/lib/python2.2/socket.py", > > line 41, in ? > > File "/home/vminds/public_html/torrents/python/lib/python2.2/httplib.py", > > line 71, in ? > > File > > "/home/vminds/public_html/torrents/TF_BitTornado/BitTornado/zurllib.py", > > line 4, in ? > > File > > "/home/vminds/public_html/torrents/TF_BitTornado/BitTornado/download_bt1.py", > > line 4, in ? > > File "/home/vminds/public_html/torrents/TF_BitTornado/btphptornado.py", > > line 15, in ? > > Sorry but my crystal ball is broken. Please post the *whole* traceback. > -- http://mail.python.org/mailman/listinfo/python-list
Internet
Internet You are using internet http://padmagirl.blogspot.com % -- http://mail.python.org/mailman/listinfo/python-list
Re: Python too slow?
[EMAIL PROTECTED] wrote: > A lecturer gave me the perfect answer to the question of speed. > > "You have two choices when it comes to programming. Fast code, or fast > coders." "You're either with us, or against us." George W. Bush My understanding is that while CPython performance won't be winning any awards anytime soon, Jython and IronPython are pretty impressive performers. Disclaimer: I haven't personally used Jython or IronPython. -- http://mail.python.org/mailman/listinfo/python-list
Re: Unknown cause to error (new to python)
Brandon Perry a écrit : (top-post corrected) >> >> On Wed, 2008-01-16 at 15:12 +0100, Bruno Desthuilliers wrote: >>> Brandon Perry a écrit : (snip context) but I am getting some weird errors. File "/home/vminds/public_html/torrents/python/lib/python2.2/socket.py", line 41, in ? File "/home/vminds/public_html/torrents/python/lib/python2.2/httplib.py", line 71, in ? File "/home/vminds/public_html/torrents/TF_BitTornado/BitTornado/zurllib.py", line 4, in ? File "/home/vminds/public_html/torrents/TF_BitTornado/BitTornado/download_bt1.py", line 4, in ? File "/home/vminds/public_html/torrents/TF_BitTornado/btphptornado.py", line 15, in ? >>> >>> Sorry but my crystal ball is broken. Please post the *whole* traceback. >>> > Sorry, this is all I can get. :-( > > This isn't my webserver, so the only error logs I get are what they give > me. I guess I will just have to keep working at it. Then looks like you're in for hard time. Trying to solve a problem without any relevant information is not rationaly possible. Perhaps you should try voodoo ? > Thanks for looking at it though, Brandon Sorry, can't help much here. -- http://mail.python.org/mailman/listinfo/python-list
Re: Generic string import like in strptime?
Nice. Thanks a lot. Andre On Wed, 16 Jan 2008, Paul Hankin wrote: > On Jan 16, 8:34 am, Andre <[EMAIL PROTECTED]> wrote: > > Hi there > > > > Is there a function like strptime, which takes a string and converts it > > into an array depending on a format string I provide. Like:>>> a = > > '3456\tblub-blib.0.9' > > >>> b = '%d\t%s-%s.%f' > > >>> c = mysticalfunction(a,b) > > >>> print c > > > > [3456,'blub','blib',0.9] > > Use regular expressions: see http://docs.python.org/lib/node49.html > > -- > Paul Hankin > -- http://mail.python.org/mailman/listinfo/python-list
Re: paramiko
2008/1/16, Tarun Kapoor <[EMAIL PROTECTED]>: > > > > > I am using paramiko to do an SFTP file transfer… I was able to connect to > the remote server using an SFTP client I have just to make sure that > username and password are working.. This is the code. > > > > # now, connect and use paramiko Transport to negotiate SSH2 across the > connection > > sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) > > sock.connect((hostname, port)) > > > > t = paramiko.Transport(sock) > > event = threading.Event() > > t.start_client(event) > > > > event.wait(15) > > > > if not t.is_active(): > > print 'SSH negotiation failed.' > > sys.exit(1) > > else: > > print "SSH negotiation sucessful" > > > > event.clear() > > > > t.auth_password(username=username, password=password,event=event) > > > > if not t.is_authenticated(): > > print "not authenticated" > > output: > > SSH negotiation successful > > not authenticated > > > > > > > > Tarun > > > > Waterstone Capital Management > > 2 Carlson Parkway, Suite 260 > > Plymouth, MN 55447 > > > > Direct: 952-697-4123 > > Cell:612-205-2587 > Disclaimer This e-mail and any attachments is confidential and intended > solely for the use of the individual(s) to whom it is addressed. Any views > or opinions presented are solely those of the author and do not necessarily > represent those of Waterstone Capital Management, L.P and affiliates. If you > are not the intended recipient, be advised that you have received this > e-mail in error and that any use, dissemination, printing, forwarding or > copying of this email is strictly prohibited. Please contact the sender if > you have received this e-mail in error. You should also be aware that > e-mails are susceptible to interference and you should not assume that the > contents of this e-mail originated from the sender above or that they have > been accurately reproduced in their original form. Waterstone Capital > Management, L.P. and affiliates accepts no responsibility for information, > or errors or omissions in this e-mail or use or misuse thereof. If in doubt, > please verify the authenticity with the sender. > -- > http://mail.python.org/mailman/listinfo/python-list > You are missing an event.wait() after t.auth_password. Also, why are you passing this magic value "15" to event.wait() ? That parameter is passed to class _Verbose to indicate if debug messages should be displayed or not, so typical values would be 0/1 or False/True. -- -- Guilherme H. Polo Goncalves -- http://mail.python.org/mailman/listinfo/python-list
Re: Python too slow?
On Jan 16, 5:52 pm, Ed Jensen <[EMAIL PROTECTED]> wrote: > [EMAIL PROTECTED] wrote: > > A lecturer gave me the perfect answer to the question of speed. > > > "You have two choices when it comes to programming. Fast code, or fast > > coders." > > "You're either with us, or against us." > > George W. Bush > > My understanding is that while CPython performance won't be winning > any awards anytime soon, Jython and IronPython are pretty impressive > performers. > > Disclaimer: I haven't personally used Jython or IronPython. Indeed, it is as Paul Rudin said; "It's more a continuum than that suggests. The tricky bit is deciding in each situation where you should be on the continuum." -- http://mail.python.org/mailman/listinfo/python-list
Re: paramiko
# now, connect and use paramiko Transport to negotiate SSH2 across the connection sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.connect((hostname, port)) t = paramiko.Transport(sock) t.start_client() key = t.get_remote_server_key() event = threading.Event() t.auth_password(username=username, password=password, event=event) event.wait() if not t.is_authenticated(): print "not authenticated" output: not authenticated On Jan 16, 11:11 am, "Guilherme Polo" <[EMAIL PROTECTED]> wrote: > 2008/1/16, Tarun Kapoor <[EMAIL PROTECTED]>: > > > > > > > I am using paramiko to do an SFTP file transfer... I was able to connect to > > the remote server using an SFTP client I have just to make sure that > > username and password are working.. This is the code. > > > # now, connect and use paramiko Transport to negotiate SSH2 across the > > connection > > > sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) > > > sock.connect((hostname, port)) > > > t = paramiko.Transport(sock) > > > event = threading.Event() > > > t.start_client(event) > > > event.wait(15) > > > if not t.is_active(): > > > print 'SSH negotiation failed.' > > > sys.exit(1) > > > else: > > > print "SSH negotiation sucessful" > > > event.clear() > > > t.auth_password(username=username, password=password,event=event) > > > if not t.is_authenticated(): > > > print "not authenticated" > > > output: > > > SSH negotiation successful > > > not authenticated > > > Tarun > > > Waterstone Capital Management > > > 2 Carlson Parkway, Suite 260 > > > Plymouth, MN 55447 > > > Direct: 952-697-4123 > > > Cell:612-205-2587 > > Disclaimer This e-mail and any attachments is confidential and intended > > solely for the use of the individual(s) to whom it is addressed. Any views > > or opinions presented are solely those of the author and do not necessarily > > represent those of Waterstone Capital Management, L.P and affiliates. If you > > are not the intended recipient, be advised that you have received this > > e-mail in error and that any use, dissemination, printing, forwarding or > > copying of this email is strictly prohibited. Please contact the sender if > > you have received this e-mail in error. You should also be aware that > > e-mails are susceptible to interference and you should not assume that the > > contents of this e-mail originated from the sender above or that they have > > been accurately reproduced in their original form. Waterstone Capital > > Management, L.P. and affiliates accepts no responsibility for information, > > or errors or omissions in this e-mail or use or misuse thereof. If in doubt, > > please verify the authenticity with the sender. > > -- > >http://mail.python.org/mailman/listinfo/python-list > > You are missing an event.wait() after t.auth_password. > Also, why are you passing this magic value "15" to event.wait() ? That > parameter is passed to class _Verbose to indicate if debug messages > should be displayed or not, so typical values would be 0/1 or > False/True. > > -- > -- Guilherme H. Polo Goncalves -- http://mail.python.org/mailman/listinfo/python-list
read_nonblocking error in pxssh
I'm attempting to use the pxssh to execute commands on a remote
machine and do stuff with the output. Both machines are running SSH
Version Sun_SSH_1.0, protocol versions 1.5/2.0 and Intel Solaris 9.
I am hitting a problem with read_nonblocking in the pexpect module as
follows:
>>> import pxssh
>>> s=pxssh.pxssh()
>>> s.login("myhost","root","mypass")
Trying command: ssh -q -l root gerard
Expect returned i=2
Expect returned i=1
Traceback (most recent call last):
File "", line 1, in
File "pxssh.py", line 244, in login
if not self.synch_original_prompt():
File "pxssh.py", line 134, in synch_original_prompt
self.read_nonblocking(size=1,timeout=10) # GAS: Clear out the
cache before getting the prompt
File "/opt/python2.5.1/lib/python2.5/site-packages/pexpect.py", line
824, in read_nonblocking
raise TIMEOUT ('Timeout exceeded in read_nonblocking().')
pexpect.TIMEOUT: Timeout exceeded in read_nonblocking().
Running the ssh command from the shell yields:
bash-2.05# ssh -q -l root myhost
[EMAIL PROTECTED]'s password:
Last login: Wed Jan 16 17:10:32 2008 from x.x.x.x
Sun Microsystems Inc. SunOS 5.9 Generic January 2003
Sun Microsystems Inc. SunOS 5.9 Generic January 2003
[EMAIL PROTECTED]:/ #
I would be grateful if anyone could make a suggestion as to where I go
next? Is read_nonblocking(), the correct method to be using here?
Are there any options in pxssh I need to explore (I've tried ssh -t,
but this means the password entry fails with raise ExceptionPxssh
('password refused')).
Many thanks
Jon
--
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Re: anti-spam policy for c.l.py?
On Jan 16, 3:11 pm, Bruno Desthuilliers wrote: > Jeroen Ruigrok van der Werven a écrit : > > > -On [20080116 12:51], Bruno Desthuilliers ([EMAIL PROTECTED]) wrote: > >> Apart from checking posts headers and complaining about the relevant > >> ISPs, there's not much you can do AFAIK. This is usenet, not a > >> mailing-list. > > > It is both actually. [EMAIL PROTECTED] is linked to comp.lang.python due > > to a news gateway. > > Yes, I know - but the OP explicitely mentionned c.l.py (re-read the > title), not the ML. technically correct, but the idea is of course to keep all those archives relatively clean and informative. the new fad i've observed seems to be to initiate whole threads where previously spam very often stopped short of any second post. -- http://mail.python.org/mailman/listinfo/python-list
Re: paramiko
2008/1/16, Tarun Kapoor <[EMAIL PROTECTED]>: > # now, connect and use paramiko Transport to negotiate SSH2 across > the connection > sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) > sock.connect((hostname, port)) > > t = paramiko.Transport(sock) > t.start_client() > key = t.get_remote_server_key() > > event = threading.Event() > t.auth_password(username=username, password=password, event=event) > event.wait() > > if not t.is_authenticated(): > print "not authenticated" > > output: > not authenticated > This is a different problem I guess, now you are usin get_remote_server_key. And why are you creating event after calling start_client without specifying it ? > > > > On Jan 16, 11:11 am, "Guilherme Polo" <[EMAIL PROTECTED]> wrote: > > 2008/1/16, Tarun Kapoor <[EMAIL PROTECTED]>: > > > > > > > > > > > > > I am using paramiko to do an SFTP file transfer... I was able to connect > > > to > > > the remote server using an SFTP client I have just to make sure that > > > username and password are working.. This is the code. > > > > > # now, connect and use paramiko Transport to negotiate SSH2 across the > > > connection > > > > > sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) > > > > > sock.connect((hostname, port)) > > > > > t = paramiko.Transport(sock) > > > > > event = threading.Event() > > > > > t.start_client(event) > > > > > event.wait(15) > > > > > if not t.is_active(): > > > > > print 'SSH negotiation failed.' > > > > > sys.exit(1) > > > > > else: > > > > > print "SSH negotiation sucessful" > > > > > event.clear() > > > > > t.auth_password(username=username, password=password,event=event) > > > > > if not t.is_authenticated(): > > > > > print "not authenticated" > > > > > output: > > > > > SSH negotiation successful > > > > > not authenticated > > > > > Tarun > > > > > Waterstone Capital Management > > > > > 2 Carlson Parkway, Suite 260 > > > > > Plymouth, MN 55447 > > > > > Direct: 952-697-4123 > > > > > Cell:612-205-2587 > > > Disclaimer This e-mail and any attachments is confidential and intended > > > solely for the use of the individual(s) to whom it is addressed. Any views > > > or opinions presented are solely those of the author and do not > > > necessarily > > > represent those of Waterstone Capital Management, L.P and affiliates. If > > > you > > > are not the intended recipient, be advised that you have received this > > > e-mail in error and that any use, dissemination, printing, forwarding or > > > copying of this email is strictly prohibited. Please contact the sender if > > > you have received this e-mail in error. You should also be aware that > > > e-mails are susceptible to interference and you should not assume that the > > > contents of this e-mail originated from the sender above or that they have > > > been accurately reproduced in their original form. Waterstone Capital > > > Management, L.P. and affiliates accepts no responsibility for information, > > > or errors or omissions in this e-mail or use or misuse thereof. If in > > > doubt, > > > please verify the authenticity with the sender. > > > -- > > >http://mail.python.org/mailman/listinfo/python-list > > > > You are missing an event.wait() after t.auth_password. > > Also, why are you passing this magic value "15" to event.wait() ? That > > parameter is passed to class _Verbose to indicate if debug messages > > should be displayed or not, so typical values would be 0/1 or > > False/True. > > > > -- > > -- Guilherme H. Polo Goncalves > > -- > http://mail.python.org/mailman/listinfo/python-list > -- -- Guilherme H. Polo Goncalves -- http://mail.python.org/mailman/listinfo/python-list
Re: paramiko
On Jan 16, 11:38 am, "Guilherme Polo" <[EMAIL PROTECTED]> wrote: > 2008/1/16, Tarun Kapoor <[EMAIL PROTECTED]>: > > > > > # now, connect and use paramiko Transport to negotiate SSH2 across > > the connection > > sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) > > sock.connect((hostname, port)) > > > t = paramiko.Transport(sock) > > t.start_client() > > key = t.get_remote_server_key() > > > event = threading.Event() > > t.auth_password(username=username, password=password, event=event) > > event.wait() > > > if not t.is_authenticated(): > > print "not authenticated" > > > output: > > not authenticated > > This is a different problem I guess, now you are usin get_remote_server_key. > And why are you creating event after calling start_client without > specifying it ? > > > > > > > On Jan 16, 11:11 am, "Guilherme Polo" <[EMAIL PROTECTED]> wrote: > > > 2008/1/16, Tarun Kapoor <[EMAIL PROTECTED]>: > > > > > I am using paramiko to do an SFTP file transfer... I was able to > > > > connect to > > > > the remote server using an SFTP client I have just to make sure that > > > > username and password are working.. This is the code. > > > > > # now, connect and use paramiko Transport to negotiate SSH2 across > > > > the > > > > connection > > > > > sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) > > > > > sock.connect((hostname, port)) > > > > > t = paramiko.Transport(sock) > > > > > event = threading.Event() > > > > > t.start_client(event) > > > > > event.wait(15) > > > > > if not t.is_active(): > > > > > print 'SSH negotiation failed.' > > > > > sys.exit(1) > > > > > else: > > > > > print "SSH negotiation sucessful" > > > > > event.clear() > > > > > t.auth_password(username=username, password=password,event=event) > > > > > if not t.is_authenticated(): > > > > > print "not authenticated" > > > > > output: > > > > > SSH negotiation successful > > > > > not authenticated > > > > > Tarun > > > > > Waterstone Capital Management > > > > > 2 Carlson Parkway, Suite 260 > > > > > Plymouth, MN 55447 > > > > > Direct: 952-697-4123 > > > > > Cell:612-205-2587 > > > > Disclaimer This e-mail and any attachments is confidential and intended > > > > solely for the use of the individual(s) to whom it is addressed. Any > > > > views > > > > or opinions presented are solely those of the author and do not > > > > necessarily > > > > represent those of Waterstone Capital Management, L.P and affiliates. > > > > If you > > > > are not the intended recipient, be advised that you have received this > > > > e-mail in error and that any use, dissemination, printing, forwarding or > > > > copying of this email is strictly prohibited. Please contact the sender > > > > if > > > > you have received this e-mail in error. You should also be aware that > > > > e-mails are susceptible to interference and you should not assume that > > > > the > > > > contents of this e-mail originated from the sender above or that they > > > > have > > > > been accurately reproduced in their original form. Waterstone Capital > > > > Management, L.P. and affiliates accepts no responsibility for > > > > information, > > > > or errors or omissions in this e-mail or use or misuse thereof. If in > > > > doubt, > > > > please verify the authenticity with the sender. > > > > -- > > > >http://mail.python.org/mailman/listinfo/python-list > > > > You are missing an event.wait() after t.auth_password. > > > Also, why are you passing this magic value "15" to event.wait() ? That > > > parameter is passed to class _Verbose to indicate if debug messages > > > should be displayed or not, so typical values would be 0/1 or > > > False/True. > > > > -- > > > -- Guilherme H. Polo Goncalves > > > -- > >http://mail.python.org/mailman/listinfo/python-list > > -- > -- Guilherme H. Polo Goncalves ok here is the problem... I don't know what is the correct way... The only demos i have from the paramiko library use a hostkeyfile. since i don't have that i thought i would use the get_remote_key to get the key and then connect it using the code in the demo.. But clearly nothing is working...I should not HAVE to use the key since i should be able to authenticate using the password... Can you please suggest the right way to go ? Thanks for your time ! -- http://mail.python.org/mailman/listinfo/python-list
Re: Interesting Thread Gotcha
On Jan 16, 11:06 am, "Diez B. Roggisch" <[EMAIL PROTECTED]> wrote: > Hendrik van Rooyen wrote: > > "Dan" wrote: > > >> >>> keyboard_thread = thread.start_new_thread(kbd_driver (port_q,kbd_q)) > > >> Needs to be > >> >>> keyboard_thread = thread.start_new_thread(kbd_driver, (port_q,kbd_q)) > > >> Commas are important! > > >> -Dan > > > Absolutely! - well spotted! > > > As the first correct respondent, you win the freedom to spend a week in > > Naboomspruit at your own expense. > > > It would have been nice, however, to have gotten something like: > > > TypeError - This routine needs a tuple. > > > instead of the silent in line calling of the routine in question, > > while failing actually to start a new thread. > > You can't prevent the silent inline-calling - otherwise, how would you do > this: > > def compute_thread_target(): > def target(): > pass > return target > > thread.start_new_thread(compute_thread_target()) > > Of course start_new_thread could throw an error if it got nothing callable > as first argument. No idea why it doesn't. > > Diez Of course, in his case, having start_new_thread throw an error wouldn't have helped, since he went into an infinite loop while evaluating the parameters for start_new_thread. Would it be possible to have pychecker (or some such) warn that there is an insufficient parameter count to start_new_thread? I guess that would require knowing the type of thread. . . -Dan -- http://mail.python.org/mailman/listinfo/python-list
Re: paramiko
2008/1/16, Tarun Kapoor <[EMAIL PROTECTED]>: > On Jan 16, 11:38 am, "Guilherme Polo" <[EMAIL PROTECTED]> wrote: > > 2008/1/16, Tarun Kapoor <[EMAIL PROTECTED]>: > > > > > > > > > # now, connect and use paramiko Transport to negotiate SSH2 across > > > the connection > > > sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) > > > sock.connect((hostname, port)) > > > > > t = paramiko.Transport(sock) > > > t.start_client() > > > key = t.get_remote_server_key() > > > > > event = threading.Event() > > > t.auth_password(username=username, password=password, event=event) > > > event.wait() > > > > > if not t.is_authenticated(): > > > print "not authenticated" > > > > > output: > > > not authenticated > > > > This is a different problem I guess, now you are usin get_remote_server_key. > > And why are you creating event after calling start_client without > > specifying it ? > > > > > > > > > > > > > On Jan 16, 11:11 am, "Guilherme Polo" <[EMAIL PROTECTED]> wrote: > > > > 2008/1/16, Tarun Kapoor <[EMAIL PROTECTED]>: > > > > > > > I am using paramiko to do an SFTP file transfer... I was able to > > > > > connect to > > > > > the remote server using an SFTP client I have just to make sure that > > > > > username and password are working.. This is the code. > > > > > > > # now, connect and use paramiko Transport to negotiate SSH2 > > > > > across the > > > > > connection > > > > > > > sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) > > > > > > > sock.connect((hostname, port)) > > > > > > > t = paramiko.Transport(sock) > > > > > > > event = threading.Event() > > > > > > > t.start_client(event) > > > > > > > event.wait(15) > > > > > > > if not t.is_active(): > > > > > > > print 'SSH negotiation failed.' > > > > > > > sys.exit(1) > > > > > > > else: > > > > > > > print "SSH negotiation sucessful" > > > > > > > event.clear() > > > > > > > t.auth_password(username=username, password=password,event=event) > > > > > > > if not t.is_authenticated(): > > > > > > > print "not authenticated" > > > > > > > output: > > > > > > > SSH negotiation successful > > > > > > > not authenticated > > > > > > > Tarun > > > > > > > Waterstone Capital Management > > > > > > > 2 Carlson Parkway, Suite 260 > > > > > > > Plymouth, MN 55447 > > > > > > > Direct: 952-697-4123 > > > > > > > Cell:612-205-2587 > > > > > Disclaimer This e-mail and any attachments is confidential and > > > > > intended > > > > > solely for the use of the individual(s) to whom it is addressed. Any > > > > > views > > > > > or opinions presented are solely those of the author and do not > > > > > necessarily > > > > > represent those of Waterstone Capital Management, L.P and affiliates. > > > > > If you > > > > > are not the intended recipient, be advised that you have received this > > > > > e-mail in error and that any use, dissemination, printing, forwarding > > > > > or > > > > > copying of this email is strictly prohibited. Please contact the > > > > > sender if > > > > > you have received this e-mail in error. You should also be aware that > > > > > e-mails are susceptible to interference and you should not assume > > > > > that the > > > > > contents of this e-mail originated from the sender above or that they > > > > > have > > > > > been accurately reproduced in their original form. Waterstone Capital > > > > > Management, L.P. and affiliates accepts no responsibility for > > > > > information, > > > > > or errors or omissions in this e-mail or use or misuse thereof. If in > > > > > doubt, > > > > > please verify the authenticity with the sender. > > > > > -- > > > > >http://mail.python.org/mailman/listinfo/python-list > > > > > > You are missing an event.wait() after t.auth_password. > > > > Also, why are you passing this magic value "15" to event.wait() ? That > > > > parameter is passed to class _Verbose to indicate if debug messages > > > > should be displayed or not, so typical values would be 0/1 or > > > > False/True. > > > > > > -- > > > > -- Guilherme H. Polo Goncalves > > > > > -- > > >http://mail.python.org/mailman/listinfo/python-list > > > > -- > > -- Guilherme H. Polo Goncalves > > > ok here is the problem... I don't know what is the correct way... The > only demos i have from the paramiko library use a hostkeyfile. since i > don't have that i thought i would use the get_remote_key to get the > key and then connect it using the code in the demo.. But clearly > nothing is working...I should not HAVE to use the key since i should > be able to authenticate using the password... > > Can you please suggest the right way to go ? You don't need to use key to authenticate using username and password, indeed. And you don't. Your first email was almost correct, you just needed to add event.wait() after t.auth_password. It worked here after doing that change. You can check out my version: import sys imp
Help with python shell
I just upgraded my Python install up to version 2.5.1 (from 2.4.x) using source code and compiling. Everything went fine until I enter the command line mode and press any arrow keys. When I press UP arrow, I was getting my previous command as always but now I get: ^[[A What can I do to fix this?? Thanks! cbmeeks -- http://mail.python.org/mailman/listinfo/python-list
Re: Interesting Thread Gotcha
Dan schrieb: > On Jan 16, 11:06 am, "Diez B. Roggisch" <[EMAIL PROTECTED]> wrote: >> Hendrik van Rooyen wrote: >>> "Dan" wrote: >>> keyboard_thread = thread.start_new_thread(kbd_driver (port_q,kbd_q)) Needs to be >>> keyboard_thread = thread.start_new_thread(kbd_driver, (port_q,kbd_q)) Commas are important! -Dan >>> Absolutely! - well spotted! >>> As the first correct respondent, you win the freedom to spend a week in >>> Naboomspruit at your own expense. >>> It would have been nice, however, to have gotten something like: >>> TypeError - This routine needs a tuple. >>> instead of the silent in line calling of the routine in question, >>> while failing actually to start a new thread. >> You can't prevent the silent inline-calling - otherwise, how would you do >> this: >> >> def compute_thread_target(): >> def target(): >> pass >> return target >> >> thread.start_new_thread(compute_thread_target()) >> >> Of course start_new_thread could throw an error if it got nothing callable >> as first argument. No idea why it doesn't. >> >> Diez > > Of course, in his case, having start_new_thread throw an error > wouldn't have helped, since he went into an infinite loop while > evaluating the parameters for start_new_thread. > > Would it be possible to have pychecker (or some such) warn that there > is an insufficient parameter count to start_new_thread? I guess that > would require knowing the type of thread. . . What has this to do with the second argument? It's perfectly legal to have a function as thread-target that takes no arguments at all, so enforcing a second argument wouldn't be helpful - all it would do is to force all developers that don't need an argument tuple to pass the empty tuple. So there was no insufficient argument count. And none of these would solve the underlying problem that in python expressions are evaluated eagerly. Changing that would mean that you end up with a totally new language. the only thing that could help to a certain extend would be static types. Which we don't want here :) Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: Help with python shell
cbmeeks schrieb: > I just upgraded my Python install up to version 2.5.1 (from 2.4.x) > using source code and compiling. > > Everything went fine until I enter the command line mode and press any > arrow keys. > > When I press UP arrow, I was getting my previous command as always but > now I get: ^[[A > > What can I do to fix this?? Compiling with readline support? I guess that's missing. Diez -- http://mail.python.org/mailman/listinfo/python-list
Current Special Vicoden
Living in Pain. We can help Pain Meds Online discoveyamazing.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Interesting Thread Gotcha
On Jan 16, 1:33 pm, "Diez B. Roggisch" <[EMAIL PROTECTED]> wrote: > Dan schrieb: > > > > > On Jan 16, 11:06 am, "Diez B. Roggisch" <[EMAIL PROTECTED]> wrote: > >> Hendrik van Rooyen wrote: > >>> "Dan" wrote: > >>> keyboard_thread = thread.start_new_thread(kbd_driver (port_q,kbd_q)) > Needs to be > >>> keyboard_thread = thread.start_new_thread(kbd_driver, (port_q,kbd_q)) > Commas are important! > -Dan > >>> Absolutely! - well spotted! > >>> As the first correct respondent, you win the freedom to spend a week in > >>> Naboomspruit at your own expense. > >>> It would have been nice, however, to have gotten something like: > >>> TypeError - This routine needs a tuple. > >>> instead of the silent in line calling of the routine in question, > >>> while failing actually to start a new thread. > >> You can't prevent the silent inline-calling - otherwise, how would you do > >> this: > > >> def compute_thread_target(): > >> def target(): > >> pass > >> return target > > >> thread.start_new_thread(compute_thread_target()) > > >> Of course start_new_thread could throw an error if it got nothing callable > >> as first argument. No idea why it doesn't. > > >> Diez > > > Of course, in his case, having start_new_thread throw an error > > wouldn't have helped, since he went into an infinite loop while > > evaluating the parameters for start_new_thread. > > > Would it be possible to have pychecker (or some such) warn that there > > is an insufficient parameter count to start_new_thread? I guess that > > would require knowing the type of thread. . . > > What has this to do with the second argument? It's perfectly legal to > have a function as thread-target that takes no arguments at all, so > enforcing a second argument wouldn't be helpful - all it would do is to > force all developers that don't need an argument tuple to pass the empty > tuple. So there was no insufficient argument count. > > And none of these would solve the underlying problem that in python > expressions are evaluated eagerly. Changing that would mean that you end > up with a totally new language. > > the only thing that could help to a certain extend would be static > types. Which we don't want here :) > > Diez It doesn't seem to be legal in my version of python (or the doc): >>> import thread >>> def bat(): print "hello" >>> thread.start_new_thread(bat) Traceback (most recent call last): File "", line 1, in thread.start_new_thread(bat) TypeError: start_new_thread expected at least 2 arguments, got 1 >>> thread.start_new_thread(bat, ()) 2256hello >>> -Dan -- http://mail.python.org/mailman/listinfo/python-list
Re: A question about event handlers with wxPython
"Mike Driscoll" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > On Jan 15, 2:20 pm, "Erik Lind" <[EMAIL PROTECTED]> wrote: >> That all looks cool. I will experiment more. I'm a bit slow on this as >> only >> two weeks old so far. >> >> Thanks for the patience > > No problem. I'm pretty slow with some toolkits too...such as > SQLAlchemy. Ugh. > > Mike BTW, The wxPython group that you mentionedis that http://wxforum.shadonet.com/? -- http://mail.python.org/mailman/listinfo/python-list
Re: MSI read support in msilib?
> The introduction from the msilib documentation in python 2.5 claims it > supports reading an msi. However on the Record class there is only a > GetFieldCount() method and some Set*() methods. I was expecting to > see GetString() and GetInteger() methods to be able to read the > values. > > Maybe I'm missing something? I think you are right - there is indeed stuff missing; few people have noticed so far. Regards, Martin -- http://mail.python.org/mailman/listinfo/python-list
Re: A question about event handlers with wxPython
On Jan 16, 12:45 pm, "Erik Lind" <[EMAIL PROTECTED]> wrote: > "Mike Driscoll" <[EMAIL PROTECTED]> wrote in message > > news:[EMAIL PROTECTED] > > > On Jan 15, 2:20 pm, "Erik Lind" <[EMAIL PROTECTED]> wrote: > >> That all looks cool. I will experiment more. I'm a bit slow on this as > >> only > >> two weeks old so far. > > >> Thanks for the patience > > > No problem. I'm pretty slow with some toolkits too...such as > > SQLAlchemy. Ugh. > > > Mike > > BTW, > > The wxPython group that you mentionedis thathttp://wxforum.shadonet.com/ > ? I think those are C++ users using the pure C++ wx. I meant the following: http://wxpython.org/maillist.php Mike -- http://mail.python.org/mailman/listinfo/python-list
Creating unique combinations from lists
I have three lists... for instance a = ['big', 'small', 'medium']; b = ['old', 'new']; c = ['blue', 'green']; I want to take those and end up with all of the combinations they create like the following lists ['big', 'old', 'blue'] ['small', 'old', 'blue'] ['medium', 'old', 'blue'] ['big', 'old', 'green'] ['small', 'old', 'green'] ['medium', 'small', 'green'] ['big', 'new', 'blue'] ['small', 'new', 'blue'] ['medium', 'new', 'blue'] ['big', 'new', 'green'] ['small', 'new', 'green'] ['medium', 'new', 'green' ] I could do nested for ... in loops, but was looking for a Pythonic way to do this. Ideas? -- http://mail.python.org/mailman/listinfo/python-list
Re: Interesting Thread Gotcha
Dan schrieb: > On Jan 16, 1:33 pm, "Diez B. Roggisch" <[EMAIL PROTECTED]> wrote: >> Dan schrieb: >> >> >> >>> On Jan 16, 11:06 am, "Diez B. Roggisch" <[EMAIL PROTECTED]> wrote: Hendrik van Rooyen wrote: > "Dan" wrote: > keyboard_thread = thread.start_new_thread(kbd_driver (port_q,kbd_q)) >> Needs to be > keyboard_thread = thread.start_new_thread(kbd_driver, (port_q,kbd_q)) >> Commas are important! >> -Dan > Absolutely! - well spotted! > As the first correct respondent, you win the freedom to spend a week in > Naboomspruit at your own expense. > It would have been nice, however, to have gotten something like: > TypeError - This routine needs a tuple. > instead of the silent in line calling of the routine in question, > while failing actually to start a new thread. You can't prevent the silent inline-calling - otherwise, how would you do this: def compute_thread_target(): def target(): pass return target thread.start_new_thread(compute_thread_target()) Of course start_new_thread could throw an error if it got nothing callable as first argument. No idea why it doesn't. Diez >>> Of course, in his case, having start_new_thread throw an error >>> wouldn't have helped, since he went into an infinite loop while >>> evaluating the parameters for start_new_thread. >>> Would it be possible to have pychecker (or some such) warn that there >>> is an insufficient parameter count to start_new_thread? I guess that >>> would require knowing the type of thread. . . >> What has this to do with the second argument? It's perfectly legal to >> have a function as thread-target that takes no arguments at all, so >> enforcing a second argument wouldn't be helpful - all it would do is to >> force all developers that don't need an argument tuple to pass the empty >> tuple. So there was no insufficient argument count. >> >> And none of these would solve the underlying problem that in python >> expressions are evaluated eagerly. Changing that would mean that you end >> up with a totally new language. >> >> the only thing that could help to a certain extend would be static >> types. Which we don't want here :) >> >> Diez > > It doesn't seem to be legal in my version of python (or the doc): > import thread def bat(): > print "hello" > > thread.start_new_thread(bat) > > Traceback (most recent call last): > File "", line 1, in > thread.start_new_thread(bat) > TypeError: start_new_thread expected at least 2 arguments, got 1 thread.start_new_thread(bat, ()) > 2256hello Ah, I thought it was optional, as in the threading.Thread(target=..., args=)-version. Sorry for not looking that up. Then you'd might stand a chance that pychecker can find such a situation - but of course not on a general level, as in the above - that would only work with type-annotations. Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: Help with python shell
On Jan 16, 1:33 pm, "Diez B. Roggisch" <[EMAIL PROTECTED]> wrote: > cbmeeks schrieb: > > > I just upgraded my Python install up to version 2.5.1 (from 2.4.x) > > using source code and compiling. > > > Everything went fine until I enter the command line mode and press any > > arrow keys. > > > When I press UP arrow, I was getting my previous command as always but > > now I get: ^[[A > > > What can I do to fix this?? > > Compiling with readline support? I guess that's missing. > > Diez I tried ./configure --enable-readline but that didn't do the trick. ARG!! This is annoying. -- http://mail.python.org/mailman/listinfo/python-list
RE: Creating unique combinations from lists
> -Original Message- > From: [EMAIL PROTECTED] [mailto:python- > [EMAIL PROTECTED] On Behalf Of breal > Sent: Wednesday, January 16, 2008 2:15 PM > To: python-list@python.org > Subject: Creating unique combinations from lists > > I have three lists... for instance > > a = ['big', 'small', 'medium']; > b = ['old', 'new']; > c = ['blue', 'green']; > > I want to take those and end up with all of the combinations they > create like the following lists > ['big', 'old', 'blue'] > ['small', 'old', 'blue'] > ['medium', 'old', 'blue'] > ['big', 'old', 'green'] > ['small', 'old', 'green'] > ['medium', 'small', 'green'] > ['big', 'new', 'blue'] > ['small', 'new', 'blue'] > ['medium', 'new', 'blue'] > ['big', 'new', 'green'] > ['small', 'new', 'green'] > ['medium', 'new', 'green' ] > > I could do nested for ... in loops, but was looking for a Pythonic way > to do this. Ideas? http://www.python.org/dev/peps/pep-0202/ -- http://mail.python.org/mailman/listinfo/python-list
handlers.SocketHandler and exceptions
Hi all,
On our Linux systems at work I've written a Twisted logging server
that receives log messages from multiple servers/processes to post
them to a log file, essentially serializing all the process log
messages. This works well, that is until I tried this test code:
try:
t = 10 / 0
except Exception, e:
log.exception("divide by zero")
where log is the logger instance retreived from a call to getLogger().
The problem is the handlers.SocketHandler tries to cPickle.dump() the
log record, which in this case contains an exc_info tuple, the last
item of which is a Traceback object. The pickling fails with an
"unpickleable error" and that's that.
Does anyone have any ideas how to handle this situation? I'd hate to
have to give up using the log.exception(...) call as it's useful to
get strack trace information in the log file.
Thanks in advance,
Doug Farrell
--
http://mail.python.org/mailman/listinfo/python-list
Re: paramiko
On Jan 16, 12:22 pm, "Guilherme Polo" <[EMAIL PROTECTED]> wrote: > 2008/1/16, Tarun Kapoor <[EMAIL PROTECTED]>: > > > > > On Jan 16, 11:38 am, "Guilherme Polo" <[EMAIL PROTECTED]> wrote: > > > 2008/1/16, Tarun Kapoor <[EMAIL PROTECTED]>: > > > > > # now, connect and use paramiko Transport to negotiate SSH2 across > > > > the connection > > > > sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) > > > > sock.connect((hostname, port)) > > > > > t = paramiko.Transport(sock) > > > > t.start_client() > > > > key = t.get_remote_server_key() > > > > > event = threading.Event() > > > > t.auth_password(username=username, password=password, event=event) > > > > event.wait() > > > > > if not t.is_authenticated(): > > > > print "not authenticated" > > > > > output: > > > > not authenticated > > > > This is a different problem I guess, now you are usin > > > get_remote_server_key. > > > And why are you creating event after calling start_client without > > > specifying it ? > > > > > On Jan 16, 11:11 am, "Guilherme Polo" <[EMAIL PROTECTED]> wrote: > > > > > 2008/1/16, Tarun Kapoor <[EMAIL PROTECTED]>: > > > > > > > I am using paramiko to do an SFTP file transfer... I was able to > > > > > > connect to > > > > > > the remote server using an SFTP client I have just to make sure that > > > > > > username and password are working.. This is the code. > > > > > > > # now, connect and use paramiko Transport to negotiate SSH2 > > > > > > across the > > > > > > connection > > > > > > > sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) > > > > > > > sock.connect((hostname, port)) > > > > > > > t = paramiko.Transport(sock) > > > > > > > event = threading.Event() > > > > > > > t.start_client(event) > > > > > > > event.wait(15) > > > > > > > if not t.is_active(): > > > > > > > print 'SSH negotiation failed.' > > > > > > > sys.exit(1) > > > > > > > else: > > > > > > > print "SSH negotiation sucessful" > > > > > > > event.clear() > > > > > > > t.auth_password(username=username, > > > > > > password=password,event=event) > > > > > > > if not t.is_authenticated(): > > > > > > > print "not authenticated" > > > > > > > output: > > > > > > > SSH negotiation successful > > > > > > > not authenticated > > > > > > > Tarun > > > > > > > Waterstone Capital Management > > > > > > > 2 Carlson Parkway, Suite 260 > > > > > > > Plymouth, MN 55447 > > > > > > > Direct: 952-697-4123 > > > > > > > Cell:612-205-2587 > > > > > > Disclaimer This e-mail and any attachments is confidential and > > > > > > intended > > > > > > solely for the use of the individual(s) to whom it is addressed. > > > > > > Any views > > > > > > or opinions presented are solely those of the author and do not > > > > > > necessarily > > > > > > represent those of Waterstone Capital Management, L.P and > > > > > > affiliates. If you > > > > > > are not the intended recipient, be advised that you have received > > > > > > this > > > > > > e-mail in error and that any use, dissemination, printing, > > > > > > forwarding or > > > > > > copying of this email is strictly prohibited. Please contact the > > > > > > sender if > > > > > > you have received this e-mail in error. You should also be aware > > > > > > that > > > > > > e-mails are susceptible to interference and you should not assume > > > > > > that the > > > > > > contents of this e-mail originated from the sender above or that > > > > > > they have > > > > > > been accurately reproduced in their original form. Waterstone > > > > > > Capital > > > > > > Management, L.P. and affiliates accepts no responsibility for > > > > > > information, > > > > > > or errors or omissions in this e-mail or use or misuse thereof. If > > > > > > in doubt, > > > > > > please verify the authenticity with the sender. > > > > > > -- > > > > > >http://mail.python.org/mailman/listinfo/python-list > > > > > > You are missing an event.wait() after t.auth_password. > > > > > Also, why are you passing this magic value "15" to event.wait() ? That > > > > > parameter is passed to class _Verbose to indicate if debug messages > > > > > should be displayed or not, so typical values would be 0/1 or > > > > > False/True. > > > > > > -- > > > > > -- Guilherme H. Polo Goncalves > > > > > -- > > > >http://mail.python.org/mailman/listinfo/python-list > > > > -- > > > -- Guilherme H. Polo Goncalves > > > ok here is the problem... I don't know what is the correct way... The > > only demos i have from the paramiko library use a hostkeyfile. since i > > don't have that i thought i would use the get_remote_key to get the > > key and then connect it using the code in the demo.. But clearly > > nothing is working...I should not HAVE to use the key since i should > > be able to authenticate using the password... > > > Can you please suggest the right way to go ? > > You don't need to use key to authenticate using
Re: Help with python shell
cbmeeks schrieb: > On Jan 16, 1:33 pm, "Diez B. Roggisch" <[EMAIL PROTECTED]> wrote: >> cbmeeks schrieb: >> >>> I just upgraded my Python install up to version 2.5.1 (from 2.4.x) >>> using source code and compiling. >>> Everything went fine until I enter the command line mode and press any >>> arrow keys. >>> When I press UP arrow, I was getting my previous command as always but >>> now I get: ^[[A >>> What can I do to fix this?? >> Compiling with readline support? I guess that's missing. >> >> Diez > > I tried ./configure --enable-readline but that didn't do the trick. > ARG!! This is annoying. You don't just need to enable it - the readline lib needs to be installed, including the possible devel-package (If you are under linux) for the headers. Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: Creating unique combinations from lists
On Jan 16, 11:33 am, "Reedick, Andrew" <[EMAIL PROTECTED]> wrote: > > -Original Message- > > From: [EMAIL PROTECTED] [mailto:python- > > [EMAIL PROTECTED] On Behalf Of breal > > Sent: Wednesday, January 16, 2008 2:15 PM > > To: [EMAIL PROTECTED] > > Subject: Creating unique combinations from lists > > > I have three lists... for instance > > > a = ['big', 'small', 'medium']; > > b = ['old', 'new']; > > c = ['blue', 'green']; > > > I want to take those and end up with all of the combinations they > > create like the following lists > > ['big', 'old', 'blue'] > > ['small', 'old', 'blue'] > > ['medium', 'old', 'blue'] > > ['big', 'old', 'green'] > > ['small', 'old', 'green'] > > ['medium', 'small', 'green'] > > ['big', 'new', 'blue'] > > ['small', 'new', 'blue'] > > ['medium', 'new', 'blue'] > > ['big', 'new', 'green'] > > ['small', 'new', 'green'] > > ['medium', 'new', 'green' ] > > > I could do nested for ... in loops, but was looking for a Pythonic way > > to do this. Ideas? > > http://www.python.org/dev/peps/pep-0202/ Thanks for the reply. I never realized you could use list comprehension like this... AWESOME! -- http://mail.python.org/mailman/listinfo/python-list
ANN: Wing IDE 3.0.3 released
Hi, We're happy to announce version 3.0.3 of Wing IDE, an advanced development environment for the Python programming language. It is available from: http://wingware.com/downloads This release focuses on fixing some usability issues found in Wing 3.0.2, including fixes for input handling in Debug I/O, Zope debugging on 64-bit Linux, several emacs and vi mode improvements, and about 34 other bugs. See the change log for details: http://wingware.com/pub/wingide/3.0.3/CHANGELOG.txt It is a free upgrade for all Wing 3.0 users. *About Wing IDE* Wing IDE is an integrated development environment for the Python programming language. It provides powerful debugging, editing, code intelligence, testing, and search capabilities that reduce development and debugging time, cut down on coding errors, and make it easier to understand and navigate Python code. New features added in Wing 3.0 include: * Multi-threaded debugger * Debug value tooltips in editor, debug probe, and interactive shell * Autocompletion and call tips in debug probe and interactive shell * Automatically updating project directories * Testing tool, currently supporting unittest derived tests (*) * OS Commands tool for executing and interacting with external commands (*) * Rewritten indentation analysis and conversion (*) * Introduction of Wing IDE 101, a free edition for beginning programmers * Available as a .deb package for Debian and Ubuntu * Support for Stackless Python * Support for 64 bit Python on Windows and Linux (*)'d items are available in Wing IDE Professional only. System requirements are Windows 2000 or later, OS X 10.3.9 or later for PPC or Intel (requires X11 Server), or a recent Linux system (either 32 or 64 bit). *Purchasing & Upgrading* Wing IDE Professional & Wing IDE Personal are commercial software and require a license to run. To upgrade a 2.x license or purchase a new 3.x license: Upgrade: https://wingware.com/store/upgrade Purchase: https://wingware.com/store/purchase Any 2.x license sold after May 2nd 2006 is free to upgrade; others cost 1/2 the normal price to upgrade. -- The Wingware Team Wingware | Python IDE Advancing Software Development www.wingware.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Help with python shell
On Jan 16, 2:35 pm, "Diez B. Roggisch" <[EMAIL PROTECTED]> wrote: > cbmeeks schrieb: > > > > > On Jan 16, 1:33 pm, "Diez B. Roggisch" <[EMAIL PROTECTED]> wrote: > >> cbmeeks schrieb: > > >>> I just upgraded my Python install up to version 2.5.1 (from 2.4.x) > >>> using source code and compiling. > >>> Everything went fine until I enter the command line mode and press any > >>> arrow keys. > >>> When I press UP arrow, I was getting my previous command as always but > >>> now I get: ^[[A > >>> What can I do to fix this?? > >> Compiling with readline support? I guess that's missing. > > >> Diez > > > I tried ./configure --enable-readline but that didn't do the trick. > > ARG!! This is annoying. > > You don't just need to enable it - the readline lib needs to be > installed, including the possible devel-package (If you are under linux) > for the headers. > > Diez That worked! I had to install readline-devel and rebuild with --enable-readline Thanks! cbmeeks http://codershangout.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Creating unique combinations from lists
> I could do nested for ... in loops, but was looking for a Pythonic way > to do this. Ideas? I find nested for loops very Pythonic. Explicit is better than implicit, and simple is better than complex. Regards, Martin -- http://mail.python.org/mailman/listinfo/python-list
Re: paramiko
2008/1/16, Tarun Kapoor <[EMAIL PROTECTED]>: > On Jan 16, 12:22 pm, "Guilherme Polo" <[EMAIL PROTECTED]> wrote: > > 2008/1/16, Tarun Kapoor <[EMAIL PROTECTED]>: > > > > > > > > > On Jan 16, 11:38 am, "Guilherme Polo" <[EMAIL PROTECTED]> wrote: > > > > 2008/1/16, Tarun Kapoor <[EMAIL PROTECTED]>: > > > > > > > # now, connect and use paramiko Transport to negotiate SSH2 across > > > > > the connection > > > > > sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) > > > > > sock.connect((hostname, port)) > > > > > > > t = paramiko.Transport(sock) > > > > > t.start_client() > > > > > key = t.get_remote_server_key() > > > > > > > event = threading.Event() > > > > > t.auth_password(username=username, password=password, event=event) > > > > > event.wait() > > > > > > > if not t.is_authenticated(): > > > > > print "not authenticated" > > > > > > > output: > > > > > not authenticated > > > > > > This is a different problem I guess, now you are usin > > > > get_remote_server_key. > > > > And why are you creating event after calling start_client without > > > > specifying it ? > > > > > > > On Jan 16, 11:11 am, "Guilherme Polo" <[EMAIL PROTECTED]> wrote: > > > > > > 2008/1/16, Tarun Kapoor <[EMAIL PROTECTED]>: > > > > > > > > > I am using paramiko to do an SFTP file transfer... I was able to > > > > > > > connect to > > > > > > > the remote server using an SFTP client I have just to make sure > > > > > > > that > > > > > > > username and password are working.. This is the code. > > > > > > > > > # now, connect and use paramiko Transport to negotiate SSH2 > > > > > > > across the > > > > > > > connection > > > > > > > > > sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) > > > > > > > > > sock.connect((hostname, port)) > > > > > > > > > t = paramiko.Transport(sock) > > > > > > > > > event = threading.Event() > > > > > > > > > t.start_client(event) > > > > > > > > > event.wait(15) > > > > > > > > > if not t.is_active(): > > > > > > > > > print 'SSH negotiation failed.' > > > > > > > > > sys.exit(1) > > > > > > > > > else: > > > > > > > > > print "SSH negotiation sucessful" > > > > > > > > > event.clear() > > > > > > > > > t.auth_password(username=username, > > > > > > > password=password,event=event) > > > > > > > > > if not t.is_authenticated(): > > > > > > > > > print "not authenticated" > > > > > > > > > output: > > > > > > > > > SSH negotiation successful > > > > > > > > > not authenticated > > > > > > > > > Tarun > > > > > > > > > Waterstone Capital Management > > > > > > > > > 2 Carlson Parkway, Suite 260 > > > > > > > > > Plymouth, MN 55447 > > > > > > > > > Direct: 952-697-4123 > > > > > > > > > Cell:612-205-2587 > > > > > > > Disclaimer This e-mail and any attachments is confidential and > > > > > > > intended > > > > > > > solely for the use of the individual(s) to whom it is addressed. > > > > > > > Any views > > > > > > > or opinions presented are solely those of the author and do not > > > > > > > necessarily > > > > > > > represent those of Waterstone Capital Management, L.P and > > > > > > > affiliates. If you > > > > > > > are not the intended recipient, be advised that you have received > > > > > > > this > > > > > > > e-mail in error and that any use, dissemination, printing, > > > > > > > forwarding or > > > > > > > copying of this email is strictly prohibited. Please contact the > > > > > > > sender if > > > > > > > you have received this e-mail in error. You should also be aware > > > > > > > that > > > > > > > e-mails are susceptible to interference and you should not assume > > > > > > > that the > > > > > > > contents of this e-mail originated from the sender above or that > > > > > > > they have > > > > > > > been accurately reproduced in their original form. Waterstone > > > > > > > Capital > > > > > > > Management, L.P. and affiliates accepts no responsibility for > > > > > > > information, > > > > > > > or errors or omissions in this e-mail or use or misuse thereof. > > > > > > > If in doubt, > > > > > > > please verify the authenticity with the sender. > > > > > > > -- > > > > > > >http://mail.python.org/mailman/listinfo/python-list > > > > > > > > You are missing an event.wait() after t.auth_password. > > > > > > Also, why are you passing this magic value "15" to event.wait() ? > > > > > > That > > > > > > parameter is passed to class _Verbose to indicate if debug messages > > > > > > should be displayed or not, so typical values would be 0/1 or > > > > > > False/True. > > > > > > > > -- > > > > > > -- Guilherme H. Polo Goncalves > > > > > > > -- > > > > >http://mail.python.org/mailman/listinfo/python-list > > > > > > -- > > > > -- Guilherme H. Polo Goncalves > > > > > ok here is the problem... I don't know what is the correct way... The > > > only demos i have from the paramiko library use a hostkeyfile. since i > > > don't have
Re: itertools.groupby
Paul Rubin wrote: > Tobiah <[EMAIL PROTECTED]> writes: >> I tried doing this with a simple example, but noticed >> that [].sort(func) passes two arguments to func, whereas >> the function expected by groupby() uses only one argument. > > Use: [].sort(key=func) Oh cool. Thanks. Only in 2.4+ it seems. >>> a = [1,2,3,4,5] >>> def sorter(thing): ... return thing % 2 == 0 ... >>> a.sort(key = sorter) >>> print a [1, 3, 5, 2, 4] >>> Nifty -- Posted via a free Usenet account from http://www.teranews.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Help wanted with GTK+ program
On Jan 8, 5:49 pm, [EMAIL PROTECTED] wrote:
> I'm working on a simple GTK+ wrapper around the flash Pandora Radio
> player (Pandora.com).
>
> It's very basic right now but I've got it almost working.
> I'm using gtkmozembed to fetch and use the player and dbus to detect
> multimedia keys.
> The only problem I'm having is that the mozembed widget doesn't seem
> to recognize the fake keypress event sent to it.
>
> CODE
>
> #!/usr/bin/env python
>
> import gtk
> import gtkmozembed
> import dbus
> from dbus.mainloop.glib import DBusGMainLoop
>
> class Wrapper:
> def __init__(self):
> # Set-up the wrapper for the player
>
> self.win = gtk.Window() # Create a new GTK window called 'win'
>
> self.win.set_title("Pandora Player") # Set the title of the
> window
> self.win.set_icon_from_file('favicon.ico') # Set the window
> icon to a web browser icon
> self.win.set_position(gtk.WIN_POS_CENTER) # Position the
> window in the centre of the screen
>
> self.win.connect("destroy", self.close_window) # Connect the
> 'destroy' event to the 'CloseWindow' function, so that the app will
> quit properly
>
> # Handle media keys under Gnome
> DBusGMainLoop(set_as_default=True)
> bus = dbus.Bus(dbus.Bus.TYPE_SESSION)
> settings = bus.get_object('org.gnome.SettingsDaemon', '/org/
> gnome/SettingsDaemon') # Connect to gnome settings D-Bus
> settings.connect_to_signal("MediaPlayerKeyPressed",
> self.action)
>
> # Create the browser widget
> gtkmozembed.set_profile_path("/tmp", "simple_browser_user") #
> Set a temporary Mozilla profile (works around some bug)
> self.mozbrowser = gtkmozembed.MozEmbed() # Create the browser
> widget
>
> # Set-up the browser widget before we display it
> self.win.add(self.mozbrowser) # Add the 'mozbrowser' widget to
> the main window 'win'
> self.mozbrowser.load_url("https://www.pandora.com:443/radio/
> tuner_8_2_0_2_pandora.swf") # Load Pandora
> self.mozbrowser.set_size_request(640,540) # Size arrived at
> after careful trial and error
> self.mozbrowser.show() # Needed for correct size
>
> self.win.show_all() # Show the window
>
> def PlayPause(self, ):
> event = gtk.gdk.Event(gtk.gdk.KEY_PRESS)
> event.keyval = gtk.keysyms.space
> event.time = 0 # assign current time
> self.mozbrowser.grab_focus()
> self.win.emit('key_press_event', event)
>
> def ThumbsDown(self):
> event = gtk.gdk.Event(gtk.gdk.KEY_PRESS)
> event.keyval = gtk.keysyms.minus
> event.time = 0 # assign current time
> self.mozbrowser.grabfocus()
> self.win.emit('key_press_event', event)
>
> def ThumbsUp(self):
> event = gtk.gdk.Event(gtk.gdk.KEY_PRESS)
> event.keyval = gtk.keysyms.plus
> event.time = 0 # assign current time
> self.mozbrowser.grabfocus()
> self.win.emit('key_press_event', event)
>
> def Skip(self):
> event = gtk.gdk.Event(gtk.gdk.KEY_PRESS)
> event.keyval = gtk.keysyms.Right
> event.time = 0 # assign current time
> self.mozbrowser.grabfocus()
> self.win.emit('key_press_event', event)
>
> # Handles key presses
> def action(self, *keys):
> for key in keys:
> if key == "Play":
> self.PlayPause()
> elif key == "Stop":
> self.ThumbsUp()
> elif key == "Previous":
> self.ThumbsDown()
> elif key == "Next":
> self.Skip()
>
> def close_window(self, caller_widget):
> """Close the window and exit the app"""
> gtk.main_quit() # Close the app fully
>
> if __name__ == "__main__":
> wrapper = Wrapper()
> gtk.main()
I was looking for something like you are writing and seen this post,
maybe it would help you?
http://rjoblog.wordpress.com/2007/12/19/pandora-4-all/
He is showing this url: https://www.pandora.com/radio/tuner_8_2_0_2_pandora.swf
--
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Re: Perl Template Toolkit: Now in spicy new Python flavor
On Jan 15, 1:45 pm, George Sakkis <[EMAIL PROTECTED]> wrote:
> > [EMAIL PROTECTED] wrote:
> > > I'd like to inform the Python community that the powerful and popular
> > > Template Toolkit system, previously available only in its original
> > > Perl implementation, is now also available in a beta Python
> > > implementation:
>
> > >http://tt2.org/python/index.html
>
> > > I created this port both as a fun programming project, and for use in
> > > environments where Perl is not available, for reasons technical,
> > > cultural, or otherwise. The extensive Perl test suites have also been
> > > ported, and most templates require no or very little modification.
> How does it compare with other "mainstream" Python template engines
> such as Cheetah, Mako, etc. ?
I can't claim a comprehensive familiarity with Python template
offerings, but all of the packages approved for use at my previous
workplace left me cold. The most popular were ClearSilver and Django,
and both felt horribly limiting compared to the Template Toolkit,
which I became acquainted with when hacking on Bugzilla some years
ago. Neither supports what I would consider very basic operations on
the template data. Nothing like the following can be expressed in
those packages:
from pprint import PrettyPrinter
from template import Template
print Template().processString(
"the list is [% a.pformat(b(c + d)) %]",
{ "a": PrettyPrinter(2, 40), "b": range, "c": 10, "d": 20 }
)
Here we have a template that includes a method call, a function call,
and simple addition. Neither Django nor ClearSilver can manage any of
these three things. Both of those packages offer other features not
found in the Template Toolkit; it was the relative impotence of the
templating systems that drove me to attack the translation.
> Unless I missed it, the documentation
> covers the Perl version only.
The online documentation, yes. All source-level documentation (from
which the online documentation is largely drawn) has been converted
into Python docstrings in the source code. They can be read by
browsing the Subversion repository or by importing the code and using
help(); eg:
>>> import template.stash
>>> help(template.stash)
... module docs ...
>>> help(template.stash.Stash)
... class docs ...
>>> help(template.stash.Stash.get)
... method docs ...
--
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Re: import from question
"Ben Finney" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] | Tobiah <[EMAIL PROTECTED]> writes: | | > This is a little surprising. So "from mod import *" really copies | > all of the scalars into new variables in the local namespace. 'Scalar' is not a Python term. Neither is 'object pointer' really, except in respect to the CPython implementation. | No. Nothing is copied. All the objects (remembering that in Python, | *everything* is an object) created by the code in module 'mod' are | given names in the current namespace. To amplify, 'from mod import *' is, I believe, more or less equivalent to import mod for name in mod.__all__ exec "%s = mod.%s" % name,name del mod except, of course, that the imported module would not actually be bound to 'mod' (and need deleting) so that there is no conflict with mod containing the name 'mod'. -- http://mail.python.org/mailman/listinfo/python-list
Re: searching an XML doc
grflanagan wrote:
> On Jan 15, 9:33 pm, Gowri <[EMAIL PROTECTED]> wrote:
>> I've been reading about ElementTreee and ElementPath so I could use
>> them to find the right elements in the DOM. Unfortunately neither of
>> these seem to offer XPath like capabilities where I can find elements
>> based on tag, attribute values etc. Are there any libraries which can
>> give me XPath like functionality?
>
> Create your query like:
>
> ns0 = '{http://a.b.com/phedex}'
>
> query = '%srequest/%sstatus' % (ns0, ns0)
lxml supports the same thing, BTW, and how to work with namespaces is
explained in the tutorial:
http://codespeak.net/lxml/dev/tutorial.html#namespaces
Stefan
--
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Re: import from question
Ben Finney wrote: > Tobiah <[EMAIL PROTECTED]> writes: > >> This is a little surprising. So "from mod import *" really copies >> all of the scalars into new variables in the local namespace. > > No. Nothing is copied. All the objects (remembering that in Python, > *everything* is an object) created by the code in module 'mod' are > given names in the current namespace. Yeah, copied. Just as in: >>> a = 3 >>> b = a >>> a = 5 >>> b 3 >>> given b.py: ## thing = 0 ## and a.py: ## from b import * import b print thing print b.thing b.thing = 1 print b.thing print thing ### 0 0 1 0 -- Posted via a free Usenet account from http://www.teranews.com -- http://mail.python.org/mailman/listinfo/python-list
Re: paramiko
On Jan 16, 1:56 pm, "Guilherme Polo" <[EMAIL PROTECTED]> wrote: > 2008/1/16, Tarun Kapoor <[EMAIL PROTECTED]>: > > > > > On Jan 16, 12:22 pm, "Guilherme Polo" <[EMAIL PROTECTED]> wrote: > > > 2008/1/16, Tarun Kapoor <[EMAIL PROTECTED]>: > > > > > On Jan 16, 11:38 am, "Guilherme Polo" <[EMAIL PROTECTED]> wrote: > > > > > 2008/1/16, Tarun Kapoor <[EMAIL PROTECTED]>: > > > > > > > # now, connect and use paramiko Transport to negotiate SSH2 > > > > > > across > > > > > > the connection > > > > > > sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) > > > > > > sock.connect((hostname, port)) > > > > > > > t = paramiko.Transport(sock) > > > > > > t.start_client() > > > > > > key = t.get_remote_server_key() > > > > > > > event = threading.Event() > > > > > > t.auth_password(username=username, password=password, > > > > > > event=event) > > > > > > event.wait() > > > > > > > if not t.is_authenticated(): > > > > > > print "not authenticated" > > > > > > > output: > > > > > > not authenticated > > > > > > This is a different problem I guess, now you are usin > > > > > get_remote_server_key. > > > > > And why are you creating event after calling start_client without > > > > > specifying it ? > > > > > > > On Jan 16, 11:11 am, "Guilherme Polo" <[EMAIL PROTECTED]> wrote: > > > > > > > 2008/1/16, Tarun Kapoor <[EMAIL PROTECTED]>: > > > > > > > > > I am using paramiko to do an SFTP file transfer... I was able > > > > > > > > to connect to > > > > > > > > the remote server using an SFTP client I have just to make sure > > > > > > > > that > > > > > > > > username and password are working.. This is the code. > > > > > > > > > # now, connect and use paramiko Transport to negotiate SSH2 > > > > > > > > across the > > > > > > > > connection > > > > > > > > > sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) > > > > > > > > > sock.connect((hostname, port)) > > > > > > > > > t = paramiko.Transport(sock) > > > > > > > > > event = threading.Event() > > > > > > > > > t.start_client(event) > > > > > > > > > event.wait(15) > > > > > > > > > if not t.is_active(): > > > > > > > > > print 'SSH negotiation failed.' > > > > > > > > > sys.exit(1) > > > > > > > > > else: > > > > > > > > > print "SSH negotiation sucessful" > > > > > > > > > event.clear() > > > > > > > > > t.auth_password(username=username, > > > > > > > > password=password,event=event) > > > > > > > > > if not t.is_authenticated(): > > > > > > > > > print "not authenticated" > > > > > > > > > output: > > > > > > > > > SSH negotiation successful > > > > > > > > > not authenticated > > > > > > > > > Tarun > > > > > > > > > Waterstone Capital Management > > > > > > > > > 2 Carlson Parkway, Suite 260 > > > > > > > > > Plymouth, MN 55447 > > > > > > > > > Direct: 952-697-4123 > > > > > > > > > Cell:612-205-2587 > > > > > > > > Disclaimer This e-mail and any attachments is confidential and > > > > > > > > intended > > > > > > > > solely for the use of the individual(s) to whom it is > > > > > > > > addressed. Any views > > > > > > > > or opinions presented are solely those of the author and do not > > > > > > > > necessarily > > > > > > > > represent those of Waterstone Capital Management, L.P and > > > > > > > > affiliates. If you > > > > > > > > are not the intended recipient, be advised that you have > > > > > > > > received this > > > > > > > > e-mail in error and that any use, dissemination, printing, > > > > > > > > forwarding or > > > > > > > > copying of this email is strictly prohibited. Please contact > > > > > > > > the sender if > > > > > > > > you have received this e-mail in error. You should also be > > > > > > > > aware that > > > > > > > > e-mails are susceptible to interference and you should not > > > > > > > > assume that the > > > > > > > > contents of this e-mail originated from the sender above or > > > > > > > > that they have > > > > > > > > been accurately reproduced in their original form. Waterstone > > > > > > > > Capital > > > > > > > > Management, L.P. and affiliates accepts no responsibility for > > > > > > > > information, > > > > > > > > or errors or omissions in this e-mail or use or misuse thereof. > > > > > > > > If in doubt, > > > > > > > > please verify the authenticity with the sender. > > > > > > > > -- > > > > > > > >http://mail.python.org/mailman/listinfo/python-list > > > > > > > > You are missing an event.wait() after t.auth_password. > > > > > > > Also, why are you passing this magic value "15" to event.wait() ? > > > > > > > That > > > > > > > parameter is passed to class _Verbose to indicate if debug > > > > > > > messages > > > > > > > should be displayed or not, so typical values would be 0/1 or > > > > > > > False/True. > > > > > > > > -- > > > > > > > -- Guilherme H. Polo Goncalves > > > > > > > -- > > > > > >http://mail.python.org/mailman/listinfo/python-list > >
Re: module naming conventions
"Tobiah" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] | | > Release your package as free software on the Cheeseshop | > http://cheeseshop.python.org/>. If the name you want is already | > taken, pick one that will help users distinguish yours from the | > existing one. | > | | I like this idea. I developed a library with a name that got | a couple of obscure software related hits on Google. I checked | sourceforge, and found that the name was available, so I stuck | my flag in the dirt. | | It was a python module, so I suppose I will have to look into | the cheeseshop. Is that as open as sourceforge, or is it only | for mature, sophisticated modules? Look at the cheeseshop page, but I would say that 'mature' and 'sophisticated' are too high a bar. 'Potentially useful and not-known-to-be-buggy' should be more like it. -- http://mail.python.org/mailman/listinfo/python-list
Re: paramiko
2008/1/16, Tarun Kapoor <[EMAIL PROTECTED]>: > On Jan 16, 1:56 pm, "Guilherme Polo" <[EMAIL PROTECTED]> wrote: > > 2008/1/16, Tarun Kapoor <[EMAIL PROTECTED]>: > > > > > > > > > On Jan 16, 12:22 pm, "Guilherme Polo" <[EMAIL PROTECTED]> wrote: > > > > 2008/1/16, Tarun Kapoor <[EMAIL PROTECTED]>: > > > > > > > On Jan 16, 11:38 am, "Guilherme Polo" <[EMAIL PROTECTED]> wrote: > > > > > > 2008/1/16, Tarun Kapoor <[EMAIL PROTECTED]>: > > > > > > > > > # now, connect and use paramiko Transport to negotiate SSH2 > > > > > > > across > > > > > > > the connection > > > > > > > sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) > > > > > > > sock.connect((hostname, port)) > > > > > > > > > t = paramiko.Transport(sock) > > > > > > > t.start_client() > > > > > > > key = t.get_remote_server_key() > > > > > > > > > event = threading.Event() > > > > > > > t.auth_password(username=username, password=password, > > > > > > > event=event) > > > > > > > event.wait() > > > > > > > > > if not t.is_authenticated(): > > > > > > > print "not authenticated" > > > > > > > > > output: > > > > > > > not authenticated > > > > > > > > This is a different problem I guess, now you are usin > > > > > > get_remote_server_key. > > > > > > And why are you creating event after calling start_client without > > > > > > specifying it ? > > > > > > > > > On Jan 16, 11:11 am, "Guilherme Polo" <[EMAIL PROTECTED]> wrote: > > > > > > > > 2008/1/16, Tarun Kapoor <[EMAIL PROTECTED]>: > > > > > > > > > > > I am using paramiko to do an SFTP file transfer... I was able > > > > > > > > > to connect to > > > > > > > > > the remote server using an SFTP client I have just to make > > > > > > > > > sure that > > > > > > > > > username and password are working.. This is the code. > > > > > > > > > > > # now, connect and use paramiko Transport to negotiate > > > > > > > > > SSH2 across the > > > > > > > > > connection > > > > > > > > > > > sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) > > > > > > > > > > > sock.connect((hostname, port)) > > > > > > > > > > > t = paramiko.Transport(sock) > > > > > > > > > > > event = threading.Event() > > > > > > > > > > > t.start_client(event) > > > > > > > > > > > event.wait(15) > > > > > > > > > > > if not t.is_active(): > > > > > > > > > > > print 'SSH negotiation failed.' > > > > > > > > > > > sys.exit(1) > > > > > > > > > > > else: > > > > > > > > > > > print "SSH negotiation sucessful" > > > > > > > > > > > event.clear() > > > > > > > > > > > t.auth_password(username=username, > > > > > > > > > password=password,event=event) > > > > > > > > > > > if not t.is_authenticated(): > > > > > > > > > > > print "not authenticated" > > > > > > > > > > > output: > > > > > > > > > > > SSH negotiation successful > > > > > > > > > > > not authenticated > > > > > > > > > > > Tarun > > > > > > > > > > > Waterstone Capital Management > > > > > > > > > > > 2 Carlson Parkway, Suite 260 > > > > > > > > > > > Plymouth, MN 55447 > > > > > > > > > > > Direct: 952-697-4123 > > > > > > > > > > > Cell:612-205-2587 > > > > > > > > > Disclaimer This e-mail and any attachments is confidential > > > > > > > > > and intended > > > > > > > > > solely for the use of the individual(s) to whom it is > > > > > > > > > addressed. Any views > > > > > > > > > or opinions presented are solely those of the author and do > > > > > > > > > not necessarily > > > > > > > > > represent those of Waterstone Capital Management, L.P and > > > > > > > > > affiliates. If you > > > > > > > > > are not the intended recipient, be advised that you have > > > > > > > > > received this > > > > > > > > > e-mail in error and that any use, dissemination, printing, > > > > > > > > > forwarding or > > > > > > > > > copying of this email is strictly prohibited. Please contact > > > > > > > > > the sender if > > > > > > > > > you have received this e-mail in error. You should also be > > > > > > > > > aware that > > > > > > > > > e-mails are susceptible to interference and you should not > > > > > > > > > assume that the > > > > > > > > > contents of this e-mail originated from the sender above or > > > > > > > > > that they have > > > > > > > > > been accurately reproduced in their original form. Waterstone > > > > > > > > > Capital > > > > > > > > > Management, L.P. and affiliates accepts no responsibility for > > > > > > > > > information, > > > > > > > > > or errors or omissions in this e-mail or use or misuse > > > > > > > > > thereof. If in doubt, > > > > > > > > > please verify the authenticity with the sender. > > > > > > > > > -- > > > > > > > > >http://mail.python.org/mailman/listinfo/python-list > > > > > > > > > > You are missing an event.wait() after t.auth_password. > > > > > > > > Also, why are you passing this magic value "15" to event.wait() > > > > > > > > ? That > > > > > > > > parameter is passed to c
Re: Creating unique combinations from lists
> a = ['big', 'small', 'medium']; > b = ['old', 'new']; > c = ['blue', 'green']; > > I want to take those and end up with all of the combinations they > create like the following lists > ['big', 'old', 'blue'] > ['small', 'old', 'blue'] > ['medium', 'old', 'blue'] > ['big', 'old', 'green'] > ['small', 'old', 'green'] > ['medium', 'small', 'green'] > ['big', 'new', 'blue'] > ['small', 'new', 'blue'] > ['medium', 'new', 'blue'] > ['big', 'new', 'green'] > ['small', 'new', 'green'] > ['medium', 'new', 'green' ] > > I could do nested for ... in loops, but was looking for a Pythonic way > to do this. Ideas? You can use a recursive generator: def iterall(*iterables): if iterables: for head in iterables[0]: for remainder in iterall(*iterables[1:]): yield [head] + remainder else: yield [] for thing in iterall( ['big', 'medium', 'small'], ['old', 'new'], ['blue', 'green'], ): print thing The two for-loops plus recursion should handle any number of parameters, so if you were so inclined, you could do for thing in iterall( ['big', 'medium', 'small'], ['old', 'new'], ['blue', 'green'], ['smelly', 'fragrant'], ['spatula', 'avocado'], ): print thing and get all 3*2*2*2*2 items. Or count in binary: for i, bitstream in enumerate(iterall( [0, 1], [0, 1], [0, 1], [0, 1], [0, 1], [0, 1], )): print ''.join(map(str, bitstream)), '=', i When you're iterating over combinations of items in groups of lists, I prefer the clarity of this over something like [(a,b,c,d,e) for a in [0,1] for b in [0,1] for c in [0,1] for d in [0,1] for e in [0,1]] -tkc -- http://mail.python.org/mailman/listinfo/python-list
Re: error/warning color customization in interactive console?
On Jan 15, 5:44 pm, yhvh <[EMAIL PROTECTED]> wrote:
> Is it possible to output error messages in a different color?
> I'm using Terminal on Gnome.
For the few times that I want to do this, this simple form works with
xterm.
for j in range(1,10):
os.system("tput setaf "+str(j))
print "test for ", j
--
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Re: Creating unique combinations from lists
On Jan 16, 11:15 am, breal <[EMAIL PROTECTED]> wrote: > I have three lists... for instance > > a = ['big', 'small', 'medium']; > b = ['old', 'new']; > c = ['blue', 'green']; > > I want to take those and end up with all of the combinations they > create like the following lists > ['big', 'old', 'blue'] > ['small', 'old', 'blue'] > ['medium', 'old', 'blue'] > ['big', 'old', 'green'] > ['small', 'old', 'green'] > ['medium', 'small', 'green'] > ['big', 'new', 'blue'] > ['small', 'new', 'blue'] > ['medium', 'new', 'blue'] > ['big', 'new', 'green'] > ['small', 'new', 'green'] > ['medium', 'new', 'green' ] > > I could do nested for ... in loops, but was looking for a Pythonic way > to do this. Ideas? I would probably just create a generator: def permute(a,b,c): for x in a: for y in b: for z in c: yield [x,y,z] all_combos = list(permute( ['big', 'small', 'medium'], ['old', 'new'], ['blue', 'green'])) print all_combos I'm using nested for loops, but I sure find it easy to read that way. Though, using list comprehension does pretty much the same thing. It appears that Tim Chase has posted a more generic version of the above. Matt -- http://mail.python.org/mailman/listinfo/python-list
Re: import from question
Tobiah <[EMAIL PROTECTED]> writes:
> Ben Finney wrote:
> > Tobiah <[EMAIL PROTECTED]> writes:
> >
> >> This is a little surprising. So "from mod import *" really copies
> >> all of the scalars into new variables in the local namespace.
> >
> > No. Nothing is copied. All the objects (remembering that in Python,
> > *everything* is an object) created by the code in module 'mod' are
> > given names in the current namespace.
>
> Yeah, copied. Just as in:
>
> >>> a = 3
> >>> b = a
> >>> a = 5
> >>> b
> 3
> >>>
Again, those aren't copies. There is only one instance of each value,
referenced by multiple names. This is made clearer by using a mutable
value:
>>> a = [1, 2, 3]
>>> b = a
>>> c = b
>>> a = [4, 5, 6]
>>> a, b, c
([4, 5, 6], [1, 2, 3], [1, 2, 3])
>>> a.append("spam")
>>> b.append("eggs")
>>> a, b, c
([4, 5, 6, 'spam'], [1, 2, 3, 'eggs'], [1, 2, 3, 'eggs'])
The value referenced by 'b' and 'c' is one instance; they don't have
copies of the value. Assignment binds a reference to a value, it
doesn't make a copy.
A "copy" is what's implemented by the standard library 'copy' module,
hence the name.
--
\ "Whenever you read a good book, it's like the author is right |
`\ there, in the room talking to you, which is why I don't like to |
_o__)read good books." -- Jack Handey |
Ben Finney
--
http://mail.python.org/mailman/listinfo/python-list
Re: Creating unique combinations from lists
On Wed, 16 Jan 2008 11:15:16 -0800, breal wrote: > I could do nested for ... in loops, but was looking for a Pythonic way > to do this. Ideas? What makes you think nested loops aren't Pythonic? -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: Creating unique combinations from lists
>> I could do nested for ... in loops, but was looking for a Pythonic way >> to do this. Ideas? > > What makes you think nested loops aren't Pythonic? On their own, nested loops aren't a bad thing. I suspect they become un-Pythonic when they make code look ugly and show a broken model of the problem. There's a big diffence between: # iterate over a 10x10 grid for i in xrange(10): for j in xrange(10): print i,j which is pretty manageable, but quickly becomes very unpythonic if the problem is poorly defined: for a in range(5): for b in range(5): for c in range(5): for d in range(5): for e in range(5): for f in range(5): for g in range(5): for h in range(5): for i in range(5): for j in range(5): for k in range(5): for l in range(5): for m in range(5): for n in range(5): for o in range(5): for p in range(5): for q in range(5): for r in range(5): for s in range(5): for t in range(5): for u in range(5): for v in range(5): for w in range(5): for x in range(5): for y in range(5): for z in range(5): print a,b,c,d,e,f,g, print h,i,j,k,l,m,n, print o,p,q,r,s,t,u, print v,w,x,y,z It gets even worse if your loop nesting is based on something external. You wouldn't want code that looks like if len(input) == 2: for a in range(5): for b in range(5): whatever(a,b) elif len(input) == 3: for a in range(5): for b in range(5): for c in range(5): whatever(a,b,c) elif len(input) == 4: ... Contributing to the unpythonic'ness (unpythonicity?) of it is that something is clearly happening at a higher level than just for-loops so other Python constructs should be used to express them instead of abusing your code to do your dirty work. -tkc -- http://mail.python.org/mailman/listinfo/python-list
Re: Creating unique combinations from lists
> > for a in range(5): ... >for z in range(5): means the inner loop runs 5**26 times so perhaps it's not only unpythonic but also uncomputable... -- http://mail.python.org/mailman/listinfo/python-list
