Re: Need Billy the Kid modul for windows
There is a nice modul called BtK at http://home.student.utwente.nl/g.v.berg/btk/ Has someone a link for btk-python on windows? Hey spooky, I haven't seen a Windows version of BtK anywhere. Have you seen these alternative wrappers around libpcap? Could they help you out? * pylibpcap: http://pylibpcap.sourceforge.net/ * Pcapy: http://oss.coresecurity.com/projects/pcapy.html There's also libdnet, which has Python bindings: * libdnet: http://libdnet.sourceforge.net/ Hope this helps. -alex23 -- http://mail.python.org/mailman/listinfo/python-list
Re: web app breakage with utf-8
replacing connection.character_set_name instance method seems to work
but is this the correct/preferred way?
import MySQLdb
MySQLdb.get_client_info()
'4.1.8'
import sys
sys.version
'2.3.4 (#53, May 25 2004, 21:17:02) [MSC v.1200 32 bit (Intel)]'
sys.platform
'win32'
cred = {'passwd': 'secret', 'host': 'myhost', 'db': 'mydb', 'user':
'justin'}
insert = 'insert into unicodetest2 (foo) values (%s)'
alpha = u'\N{GREEK SMALL LETTER ALPHA}'
alpha
u'\u03b1'
conn.close()
conn = MySQLdb.connect(**cred)
cur = conn.cursor()
cur.execute(insert, 'a')
1L
conn.commit()
conn.close()
conn = MySQLdb.connect(**cred)
cur = conn.cursor()
cur.execute(select)
1L
cur.fetchall()
((9L, 'a'),)
conn.close()
conn = MySQLdb.connect(**cred)
cur = conn.cursor()
cur.execute(insert, alpha)
Traceback (most recent call last):
File interactive input, line 1, in ?
File E:\Python23\Lib\site-packages\MySQLdb\cursors.py, line 95, in
execute
return self._execute(query, args)
File E:\Python23\Lib\site-packages\MySQLdb\cursors.py, line 114, in
_execute
self.errorhandler(self, exc, value)
File E:\Python23\Lib\site-packages\MySQLdb\connections.py, line 33,
in defaulterrorhandler
raise errorclass, errorvalue
LookupError: unknown encoding: latin1_swedish_ci
conn.close()
conn = MySQLdb.connect(**cred)
def character_set_name(*args, **kwargs): return 'utf-8'
...
character_set_name()
'utf-8'
conn.close()
conn = MySQLdb.connect(**cred)
conn.character_set_name()
'latin1_swedish_ci'
import new
conn.character_set_name = new.instancemethod(character_set_name, conn,
conn.__class__)
conn.character_set_name()
'utf-8'
cur = conn.cursor()
cur.execute(insert, alpha)
1L
conn.close()
conn = MySQLdb.connect(**cred)
conn.character_set_name()
'latin1_swedish_ci'
cur = conn.cursor()
cur.execute(select)
2L
cur.fetchall()
((10L, '\xce\xb1'), (9L, 'a'))
conn.close()
conn = MySQLdb.connect(unicode='utf-8', **cred)
conn.character_set_name()
'latin1_swedish_ci'
cur = conn.cursor()
cur.execute(select)
2L
cur.fetchall()
((10L, u'\u03b1'), (9L, u'a'))
conn.close()
conn = MySQLdb.connect(**cred)
cur = conn.cursor()
cur.execute(select)
2L
cur.fetchall()
((10L, '\xce\xb1'), (9L, 'a'))
conn.close()
--
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Re: How to increase the window sinze in python?
arvind wrote: i want to inctrease the window size in python and make it as big as normal window. at the same time i want to change the background colour of the screen. what's the solution? what window is this ? /F -- http://mail.python.org/mailman/listinfo/python-list
Re: Python SOAP and XML-RPC performance extremely low?
Jack wrote:
When I try TooFPy with the SOAP and XML-RPC sample client code
provided in TooFPy tutorials, a log entry shows up quickly on web server
log window, but it takes a long time (5 seconds or longer)
okay, 5 seconds...
No, I'm not using any accelerator. The code is extremely simple (from
toofpy):
# XML-RPC test
import xmlrpclib
srv = xmlrpclib.Server('http://localhost:4334/RPC2/greeting')
print srv.greeting('you', 5)
and a 5 as the second argument in the greeting call. I wonder what
that does ? ;-)
(if you need a hint, look for waits the given number of seconds on
this page:
http://pyds.muensterland.org/wiki/toolserverframeworkforpythonquickstartguide.html
)
/F
--
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Help Needed !!! Browsing and Selecting More Than One File
Thank you very much for your indications. I've just subscribed for the group and even I don't know how to reply directly through mailing list. I will try to answer some of the questions you have asked about my program. Question: What has it to do with running your program with several file names as arguments? Is it two different ways to select several files in your application? Or do you want one or the other? Answer: I want to browse, and want to select all of the *.c files in a folder and than run code analyzer program for all of these files. The syntax to run on multiple files on DOS is: file1.c file2.c file3.c I want to have 2 options on my GUI, one for only to select one file, the other is to select multiple files in a project(folder). I didn't yet change the code according to your indications, there are still basic mistakes but I will send the whole code, to be more clear. When I run this code: I can browse a file and than open a file through the browser, assign it to as parameter and able to analyse one C file through a GUI I can't select more than one file. I want to do this because I will need to analyze the total project which is composed of 8-15 *.c files. Source Code: from Tkinter import * from tkFileDialog import * import tkMessageBox import os class App: #Function for browsing a file def browseFile(self): global file file = askopenfilename(filetypes = [(C source code, *.c), (All Files, *.*)]) #Function for running def run(self, event): if type(file)==str: dosya = file cmd = ' ' + dosya print cmd return os.system(cmd) else: message = tkMessageBox.showinfo(Window Text, Please Browse a File Firstly) def __init__(self, master): frame = Frame(master) frame.pack(fill=both) self.menubar = Menu(master) self.menubar.add_command(label=Browse File, command=self.browseFile) master.config(menu=self.menubar) self.Run = Button(frame, text=Run , fg=red) self.Run.bind(Button-1, self.run) self.Run.pack(side=LEFT, padx=10, pady=20) self.close = Button(frame, text=QUIT, fg=red, command=frame.quit) self.close.pack(side=LEFT, padx=10, pady=20) root = Tk() app=App(root) root.mainloop() Best Regards, Fatih K. __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Solution for XML-RPC over a proxy
Andrew R írta: All, I couldn't get my xml-rpc script to work via a corporate proxy. I noticed a few posts asking about this, and a very good helper script by jjk on starship. That script didn't work for me, and I think its a little old -- but it was very helpful to figure it out. The below script is a replacement/update to the earlier work. It is runnable as a test or usable as a module. Tests pass from behind and away from a proxy, on win32 and Linux i686, with Python 2.4.1. Comments welcome. I believe you should also post this in the Python Cookbook. -- http://mail.python.org/mailman/listinfo/python-list
switching users in cgi
hi i am developing cgi script that read a unix user name and password, After authentication, i need to switch the environment to that of that user and display his/her files in her/his home directory. As my web server runs as nobody , it cannot have access to files in the user's home. What is a correct way to be able to achieve this? thanks -- http://mail.python.org/mailman/listinfo/python-list
Re: Need Billy the Kid modul for windows
Hey, Have you seen these alternative wrappers around libpcap? Could they help you out? * pylibpcap: http://pylibpcap.sourceforge.net/ * Pcapy: http://oss.coresecurity.com/projects/pcapy.html There's also libdnet, which has Python bindings: * libdnet: http://libdnet.sourceforge.net/ Hope this helps. I Know the wrappers, but I think for packet creation like RAW-Packet the wrappers are not useful :( ?!? There is only the dpkt modul for windows and scapy and Billy the Kid for unix. Scray is too big for me :) an so I want to use the blk-modul. It is very easy to use, small and has great functions. Is there a posibility to compile the package for windows?? Thanks for your help, Spooky -- http://mail.python.org/mailman/listinfo/python-list
Re: Nested scopes, and augmented assignment
Antoon Pardon wrote: have any of your my mental model of how Python works is more important than how it actually works ever had a point ? Be free to correct me. But just suggesting that I'm wrong doesn't help me in changing my mental model. over the years, enough people have wasted enough time on trying to get you to understand how Python works, in various aspects. if you really were interested in learning, you would have learned something by now, and you wouldn't keep repeating the same old misunderstandings over and over again. /F -- http://mail.python.org/mailman/listinfo/python-list
Re: Nested scopes, and augmented assignment
Terry Reedy [EMAIL PROTECTED] (TR) wrote: TR Antoon Pardon [EMAIL PROTECTED] wrote in message TR news:[EMAIL PROTECTED] And if Nested variables are harmfull, TR I don't know if anyone said that they were, but Guido obviously does not TR think so, or he would not have added them. So skip that. I used that phrase (with correct spelling). I had supposed that it would be recognised as a variation of 'Global variables considered harmful', (William Wulf and Mary Shaw, ACM SIGPLAN Notices, 1973, 8 (2) pp. 28--34). I think nested variables have the same troubles as global variables, so they should be used with care. -- Piet van Oostrum [EMAIL PROTECTED] URL: http://www.cs.uu.nl/~piet [PGP 8DAE142BE17999C4] Private email: [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: Nested scopes, and augmented assignment
Antoon Pardon [EMAIL PROTECTED] (AP) wrote: AP Could you maybe clarify what problem we are discussing? All I wrote AP was that with an assignment the search for the lefthand variable AP depends on whether the lefthand side is a simple variable or AP more complicated. What do you mean with `the lefthand variable'? Especially when talking about `complicated lefthand sides'? AP Sure people may prefer to speak about (re)binding AP vs mutating variables, but just because I didn't use the prefered terms, AP starting to doubt my understanding of the language, seems a bit AP premature IMO. I'm sure there are areas where my understanding of AP the language is shaky, metaclasses being one of them, but understanding AP how names are searched doesn't seem to be one of them. You didn't understand it in your OP. Maybe your understanding has gained in the meantime? -- Piet van Oostrum [EMAIL PROTECTED] URL: http://www.cs.uu.nl/~piet [PGP 8DAE142BE17999C4] Private email: [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: Nested scopes, and augmented assignment
Antoon I'm no nincompoop, but I play one on the internet Pardon wrote: I don't see the contradiction. That Namespaces and names lookup are fundamentel parts of the Python language, doesn't mean that the right behaviour can't be implemented in multiple ways and doesn't contradict that a specific explanation depend on a specific implementation instead of just on language definition. the behaviour *is* defined in the language definition, and has nothing to do with a specific implementation. have you even read the language reference ? do you even know that it exists ? /F -- http://mail.python.org/mailman/listinfo/python-list
Re: Nested scopes, and augmented assignment
Piet van Oostrum wrote: There is no big difference I think. Only Python doesn't have syntax for the former. Older versions of Python didn't even have nested scopes. arbitrarily nested scopes, at least. the old local/global/builtin approach (the LGB rule) is of course a kind of nesting; the new thing is support for enclosing scopes in Python 2.1/2.2 (the LEGB rule). for some background, see: http://www.python.org/dev/peps/pep-0227/ the section Rebinding names in enclosing scopes discusses the 2.X- specific thinking; this may be revised in 3.0 (see current python-dev discussions). /F -- http://mail.python.org/mailman/listinfo/python-list
know reference name in instance
Hello: Is it possible for an instance know its name used by other part of program. I mean like this: class test: def __init__(self): pass when some one writes x = test() then one of attribute of x contain the name x Is it possible? I expect someone can tell me how to do it. -- http://mail.python.org/mailman/listinfo/python-list
Re: know reference name in instance
pipehappy wrote: Is it possible for an instance know its name used by other part of program. I mean like this: class test: def __init__(self): pass when some one writes x = test() then one of attribute of x contain the name x Is it possible? not really. and what should happen if you do, say x = test() y = x or x = [test(), test(), test()] ? for more on this, see: http://pyfaq.infogami.com/how-can-my-code-discover-the-name-of-an-object /F -- http://mail.python.org/mailman/listinfo/python-list
Re: Solution for XML-RPC over a proxy
* Andrew R [EMAIL PROTECTED] wrote: All, I couldn't get my xml-rpc script to work via a corporate proxy. I noticed a few posts asking about this, and a very good helper script by jjk on starship. That script didn't work for me, and I think its a little old -- but it was very helpful to figure it out. The below script is a replacement/update to the earlier work. It is runnable as a test or usable as a module. Tests pass from behind and away from a proxy, on win32 and Linux i686, with Python 2.4.1. Comments welcome. No real comment, just to point out an alternative that works well for me: http://docs.python.org/dev/lib/xmlrpc-client-example.html Stefan Krah -- http://mail.python.org/mailman/listinfo/python-list
Announcement : Octavia
Hi folks I just released a text to midi converter. Have a look at http://sourceforge.net/projects/octavia http://sourceforge.net/project/showfiles.php?group_id=171815 It uses a text description of music and runs the body of the music source file in python, leaving full facilities of python in your hands! Ta sree -- http://mail.python.org/mailman/listinfo/python-list
Re: Python SOAP and XML-RPC performance extremely low?
Ha! Thanks Fredrik for the big hint :) I wasn't careful when reading that page. Was in too much of a hurry to try the code :) and a 5 as the second argument in the greeting call. I wonder what that does ? ;-) (if you need a hint, look for waits the given number of seconds on this page: http://pyds.muensterland.org/wiki/toolserverframeworkforpythonquickstartguide.html ) /F -- http://mail.python.org/mailman/listinfo/python-list
Re: poplib Q
Neil Hodgson wrote: SuperHik: I did ofc, but I noticed something strange... *my* socket module really doesn't have SSL object, even tho it's listed in the documentation... (not the online docs, but docs that came with my Python version) ffs how can that be! You are probably using ActiveState's distribution which doesn't include SSL due to encryption regulations. The python.org distribution does include SSL and you may be able to copy _ssl.pyd into the ActiveState installation. Neil thank you! [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: I thought I'd 'got' globals but...
Thanks Bruno. Not only do you give solutions to my problem but also throw in great MVC tutorials too. You're a gent. I'm using controller - A CherryPy app views - Cheetah Templating for the html data model - mostly SQLite DB using pysqlite also Config It's only a desk-web app for single-user, so no concurrency issues. However, taking on board your advice to avoid globals, I've now realised that the info that I need to retain between pages can simply be session information (for the only user) that can be initialised at startup from the config. So I'm looking at just storing it all in the cherrypy.session ram vs using python globals. Thanks again Regards Steve -- http://mail.python.org/mailman/listinfo/python-list
multinormal distribution
hi there. I'm struggling with a function of numpy. Here it is : import numpy as NP mean = NP.array([0,0]) cov = NP.array([[1,0.25],[0.25,1]]) v = NP.random.multivariate_normal(mean,cov) Quite simple code : it is supposed to generate an array of two random values taken from a multinormal distribution, with respect to means and covariance matrix given as parameters. What happens on my computer is simple : it freezes ! I can't even stop the process with ctrl-C in my python interpreter i have to kill it from outside. I'm running : - python 2.4.1 - numpy 0.9.8 -- http://mail.python.org/mailman/listinfo/python-list
How to increase the window sinze in python?
hi all, i want to inctrease the window size in python and make it as big as normal window. at the same time i want to change the background colour of the screen. what's the solution? -- http://mail.python.org/mailman/listinfo/python-list
Re: Making a time series analysis package in python - advice or assistance sought
Ray Tomes: My package will have the following capabilities: 1. Able to read time series data in a variety of formats. 2. Able to create, manipulate and save time series files. 3. Able to do vector arithmetic on time series, including dozens of functions. 4. Loop and macro facilities to simplify repetitive stuff. 5. Flexible high-resolution graphic presentation. 6. Built in functions to include: FFT / fourier analysis, MESA / maximum entropy spectral analysis, multiple regression, canonical correlation etc etc etc. I have code for all these mostly in FORTRAN, some QBASIC. It seems quite doable. Beside doing vector arithmetic with SciPy, and plotting/generating graphs with MatPlotLib, you may need a GUI toolkit, like Tkinter (built-in), wxpython, etc: http://pythoncard.sourceforge.net/ http://www.wxpython.org/ etc. Designing good GUIs requires some time. The Loop and macro facilities can be done in Python itself. To use Fortran from Python: http://cens.ioc.ee/projects/f2py2e/ Bye, bearophile -- http://mail.python.org/mailman/listinfo/python-list
Re: Nested scopes, and augmented assignment
Antoon Pardon wrote:
On 2006-07-06, Bruno Desthuilliers [EMAIL PROTECTED] wrote:
Antoon Pardon wrote:
On 2006-07-05, Piet van Oostrum [EMAIL PROTECTED] wrote:
It's not about finding a name/identifier, it's about the difference
between (re)binding a name and mutating an object.
AP The two don't contradict each other. Python has chosen that it won't
AP rebind variables that are out of the local scope. So if the lefthand
AP side of an assignment is a simple name it will only search in the
AP local scope for that name. But if the lefthand side is more complicated
AP if will also search the outerscopes for the name.
Now it's pretty clear you *don't* understand.
In the second case, ie:
k = [0]
def f(i):
k[0] += i
'k[0]' is *not* a name. The name is 'k'. If we rewrite this snippet
without all the syntactic sugar, we get something like:
k = [0]
def f(i):
k.__setitem_(0, k.__getitem__(0) + i)
Now where do you see any rebinding here ?
What point do you want to make? As far as I can see, I
didn't write anything that implied I expected k to
be rebound in code like
Please re-read your own writing above.
k[0] += i
So why are you trying so hard to show me this?
I was just expecting to be of any help, but it seems you just *refuse*
to understand.
No. It will always use the same search order.
So if I understand you correctly in code like:
c.d = a
b = a
All three names
which ones ?
are searched for in all scopes between the local en global
one.
In this example, we're at the top level, so the local scope is the
global scope. I assert what you meant was:
I'm sorry I should have been more clear. I meant it to be
a piece of function code.
c = something
a = something_else
def somefunc():
c.d = a
b = a
(NB : following observations will refer to this code)
That is what I understand with your statement that [python] always
uses the same search order.
yes.
My impression was that python will search for c and a in the total current
namespace
what is the total current namespace ?
I still wait your explanation on this...
but will not for b.
b is bound in the local namespace, so there's no need to look for it in
enclosing namespaces.
Now could you clarify please. First you agree with the statement that python
always uses the same search order,
Yes : local namespace, then enclosing namespaces.
then you state here there is no need
to look for b because it is bound to local namespace.
Yes. b being bound in the local namespace, it's found in the local
namespace, so lookup stops here. Pretty simple.
That seems to
imply that the search order for b is different.
cf above.
AFAIR my original statement was that the search for b was different than
the search for a;
And it's plain wrong, as anyone taking a few minutes reading the doc and
doing some tests would know.
meaning that the search for b was limited to the local
scope and this could be determined from just viewing a line like b = a
within a function. The search for a (or c in a line like: c.d = a)
is not limited to the local scope.
Please repeat after me :
1/ binding in the local namespace makes the name local
2/ search order is local namespace first, then enclosing namespaces.
I may see some interpretation where you may say that the search order
for b is the same as for a and c
There's nothing to interpret here.
but I still am not comfortable with
it.
Too bad for you. But whether you are comfortable with reality is none
of my concern.
But a variable that is bound
inside the function (with an asignment) and is not declared global, is in
the local namespace.
Aren't we now talking about implementation details?
Certainly not. Namespaces and names lookup rules are fundamental parts
of the Python language.
I don't see the contradiction.
So go and get yourself some glasses.
That Namespaces and names lookup are
fundamentel parts of the Python language, doesn't mean that
the right behaviour
define right behaviour ?
can't be implemented in multiple ways
I don't give a damn about how it's implemented.
and
doesn't contradict that a specific explanation depend on a specific
implementation instead of just on language definition.
This is totally meaningless.
Sure the compilor
can set things up so that local names are bound to the local scope and
so the same code can be used. But it seems somewhere was made the
decision that b was in the local scope without looking for that b in
the scopes higher up.
binding creates a name in the current namespace. b is bound in the local
namespace, so b is local. period.
I wrote nothing that contradicts that.
I give up. You're a crank.
--
bruno desthuilliers
python -c print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in '[EMAIL PROTECTED]'.split('@')])
--
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Re: Looking for a high performance web server written in Python, and supports CGI/FastCGI
I just did some testing between CherryPy's web server and lighttpd. My test was very simple and I used ab.exe for this purpose. CherryPy web server can serve about 140 simple request / second, while lighttpd can handle around 400 concurrent requests. You haven't really said much about your requirements though. Perhaps if you describe them in more detail (for example, what does high performance mean to you?) someone can make a more useful recommendation. Jean-Paul -- http://mail.python.org/mailman/listinfo/python-list
Re: Nested scopes, and augmented assignment
Piet van Oostrum wrote:
(snip)
There is no big difference I think. Only Python doesn't have syntax for the
former. Older versions of Python didn't even have nested scopes. maybe it
was a mistake to add them.
Certainly not. Nested scopes allow closures, which allow decorators and
lot of *very* useful things. Remove this from Python, and you'll see a
*lot* of experimented programmers switch to another language.
--
bruno desthuilliers
python -c print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in '[EMAIL PROTECTED]'.split('@')])
--
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Re: Nested scopes, and augmented assignment
Antoon Pardon wrote:
On 2006-07-06, Piet van Oostrum [EMAIL PROTECTED] wrote:
AP Aren't we now talking about implementation details? Sure the compilor
AP can set things up so that local names are bound to the local scope and
AP so the same code can be used. But it seems somewhere was made the
AP decision that b was in the local scope without looking for that b in
AP the scopes higher up.
Yes, as I (and others) have already said several times: an assignment to a
variable inside a function body (but not an assignment to an attribute or
part of an object) without a global declaration makes that variable a local
variable. That is not an implementation detail; it is part of the language
definition.
You seem to think I didn't understand this.
And he's right, cf below.
(snip)
Could you maybe clarify what problem we are discussing? All I wrote
was that with an assignment the search for the lefthand variable
depends on whether the lefthand side is a simple variable or
more complicated.
You're obviously clueless. Which would not be a problem if you did not
refuse to first aknowledge the fact then take appropriate actions.
Sure people may prefer to speak about (re)binding
vs mutating variables, but just because I didn't use the prefered terms,
If you refuse to understand that there are pretty good reasons to use
the appropriate semantic, that's your problem, but then no one can help
you.
starting to doubt my understanding of the language, seems a bit
premature IMO.
I do not 'doubt', I'm 111% confident.
I'm sure there are areas where my understanding of
the language is shaky, metaclasses being one of them, but understanding
how names are searched doesn't seem to be one of them.
It is, obviously.
And you're definitively a crank.
--
bruno desthuilliers
python -c print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in '[EMAIL PROTECTED]'.split('@')])
--
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Re: Nested scopes, and augmented assignment
Bruno Desthuilliers wrote: Certainly not. Nested scopes allow closures, which allow decorators and lot of *very* useful things. decorators can be trivially implemented as classes, of course. it's a bit unfortunate that many people seem to think that decorators *have* to be implemented as nested functions, rather than arbitrary callables. /F -- http://mail.python.org/mailman/listinfo/python-list
Re: I thought I'd 'got' globals but...
meridian wrote:
Thanks Bruno. Not only do you give solutions to my problem but also
throw in great MVC tutorials too.
You're a gent.
(blush)
I'm using
controller - A CherryPy app
views - Cheetah Templating for the html data
model - mostly SQLite DB using pysqlite
also Config
It's only a desk-web app for single-user, so no concurrency issues.
Err... I would not be so confident wrt/ this point. What about having
two browser windows opened on different pages of the app ?
However, taking on board your advice to avoid globals, I've now
realised that the info that I need to retain between pages can simply
be session information (for the only user) that can be initialised at
startup from the config.
So I'm looking at just storing it all in the cherrypy.session ram vs
using python globals.
Think this will be better !-)
But still, avoid overusing sessions - ie, don't make session available
to objects just for covenience when you can pass required data as params.
My 2 cents...
--
bruno desthuilliers
python -c print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in '[EMAIL PROTECTED]'.split('@')])
--
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Re: handling unicode data
Dennis Lee Bieber wrote: If I interpret a short Google search, DB-Library might date back to the original Sybase core from which M$ SQL Server was spawned. M$'s site recommends /not/ using DB-Library but to use ODBC/OLEDB methods instead -- something about ODBC being extensible. Could be confusing if both Sybase and M$ SQL Server were on the same machine... http://www.cs.sfu.ca/CourseCentral/Software/Sybase/DB-LIBRARY/DB-LIBRARY.html Technical details reference Sybase, but the wordy stuff is SQL Server and Transact-SQL. The only reason I still think Pymssql (and therefore, DB-Library) might be the best option is that, it is the only one I know that is both cross-platform and free - as in beer and as in freedom. (check, in this thread, a previous message by Tim Golden) I searched a bit if there are any OLEDB based python libs and found this one: http://pyoledb.datadmin.com/ I'm still not sure if it's cross-platform or not, but It does have a commercial license, so it's not my first choice for now. -- http://mail.python.org/mailman/listinfo/python-list
Re: know reference name in instance
Fredrik Lundh wrote: pipehappy wrote: Is it possible for an instance know its name used by other part of program. I mean like this: class test: def __init__(self): pass when some one writes x = test() then one of attribute of x contain the name x Is it possible? not really. and what should happen if you do, say x = test() y = x I may choose the name when the class is initialized, other may choose the newest name. It depends. or x = [test(), test(), test()] ? None may be the good answer here. for more on this, see: http://pyfaq.infogami.com/how-can-my-code-discover-the-name-of-an-object /F Yes, You are right. But variety of condition is not necessary prohibiting the promotion of such question but provides the possibility for different answer. So is there some way I can ask the environment to tell me the name? With respect, I read your words and it's great. -- http://mail.python.org/mailman/listinfo/python-list
Re: setting variables from a tuple NEWB
On Thu, 06 Jul 2006 04:20:01 -0700, manstey wrote:
Hi,
If I have a tuple like this:
tupGlob = (('VOWELS','aeiou'),('CONS','bcdfgh'))
is it possible to write code using tupGlob that is equivalent to:
VOWELS = 'aeiou'
CONS = ''bcdfgh'
Why don't you just do that?
VOWELS = 'aeiou'
CONS = 'bcdfgh'
What benefit do you gain by stuffing your variables into tuples?
--
Steven.
--
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Re: Nested scopes, and augmented assignment
On 2006-07-07, Piet van Oostrum [EMAIL PROTECTED] wrote: Antoon Pardon [EMAIL PROTECTED] (AP) wrote: AP Could you maybe clarify what problem we are discussing? All I wrote AP was that with an assignment the search for the lefthand variable AP depends on whether the lefthand side is a simple variable or AP more complicated. What do you mean with `the lefthand variable'? Especially when talking about `complicated lefthand sides'? The name on the left side of an assignment that refers to a variable, as opposed to names that are attributes. AP Sure people may prefer to speak about (re)binding AP vs mutating variables, but just because I didn't use the prefered terms, AP starting to doubt my understanding of the language, seems a bit AP premature IMO. I'm sure there are areas where my understanding of AP the language is shaky, metaclasses being one of them, but understanding AP how names are searched doesn't seem to be one of them. You didn't understand it in your OP. Maybe your understanding has gained in the meantime? I don't rule out that I gained some understanding without noticing it. Maybe my choice of words was poor then. -- Antoon Pardon -- http://mail.python.org/mailman/listinfo/python-list
Re: Nested scopes, and augmented assignment
On 2006-07-07, Fredrik Lundh [EMAIL PROTECTED] wrote: Antoon I'm no nincompoop, but I play one on the internet Pardon wrote: I don't see the contradiction. That Namespaces and names lookup are fundamentel parts of the Python language, doesn't mean that the right behaviour can't be implemented in multiple ways and doesn't contradict that a specific explanation depend on a specific implementation instead of just on language definition. the behaviour *is* defined in the language definition, and has nothing to do with a specific implementation. As far as I can see I didn't write anything that contradicts this. It is possible that at some point my choice of wording was bad and that I gave the impression that i somehow wanted to contradict this. If that happened my appologies. have you even read the language reference ? do you even know that it exists ? You mean this, I suppose: http://docs.python.org/ref/naming.html -- Antoon Pardon -- http://mail.python.org/mailman/listinfo/python-list
Re: Nested scopes, and augmented assignment
On 2006-07-07, Fredrik Lundh [EMAIL PROTECTED] wrote: Antoon Pardon wrote: have any of your my mental model of how Python works is more important than how it actually works ever had a point ? Be free to correct me. But just suggesting that I'm wrong doesn't help me in changing my mental model. over the years, enough people have wasted enough time on trying to get you to understand how Python works, in various aspects. if you really were interested in learning, you would have learned something by now, and you wouldn't keep repeating the same old misunderstandings over and over again. May be I misunderstand, maybe I sometimes have difficulties making my self clear. If you already made up your mind which is it, that is fine by me. I just don't see the point of just posting a response that just boils down to: You are wrong. Even if you have given up on me, others might be helped if you took the trouble of explainig what was wrong. Well, that was just what I was thinking. -- Antoon Pardon -- http://mail.python.org/mailman/listinfo/python-list
Re: Making a time series analysis package in python - advice or assistance sought
Ray Tomes wrote: Hi Folks I am an old codger who has much experience with computers in the distant past before all this object oriented stuff. Also I have loads of software in such languages as FORTRAN and BASIC, QBASIC etc that is very useful except that it really doesn't like to run on modern operating systems and has hopeless graphics resolution and lack of ease of use in some ways. The Fortran code, which I assume is Fortran 77 or earlier, should run fine on modern operating systems using free (g77, g95, or gfortran) or commercial compilers. My desire is to get all the facilities available in my old programs working in a modern platform with flexible and high-res graphics and easy to use. Ideally I might find some good coders that are interested in the subject who would assist me, alternatively some help in getting started because there is so much info and so many resources and libraries etc that I don't know where to start. My package will have the following capabilities: 1. Able to read time series data in a variety of formats. 2. Able to create, manipulate and save time series files. 3. Able to do vector arithmetic on time series, including dozens of functions. Fortran 90 and later versions have array operations, as does NumPy. You could convert parts of the FORTRAN code to F90 4. Loop and macro facilities to simplify repetitive stuff. 5. Flexible high-resolution graphic presentation. 6. Built in functions to include: FFT / fourier analysis, MESA / maximum entropy spectral analysis, multiple regression, canonical correlation etc etc etc. I have code for all these mostly in FORTRAN, some QBASIC. The applications of the package include: 1. Analysis of time series data from many branches of science. 2. Economic / business models including forecasting. 3. Markets, stocks, commodities forecasting. 4. Interdisciplinary causal analysis. 5. Many more There exist public domain codes for many of the topics you mention, and I think several are part of NumPy. Many statistical algorithms are in R, for which the underlying C and Fortran code is available. I suggest that you identify which of your algorithms are not publicly available and focus on those, making an R package of them. I am interested in MESA. Then you can exploit the R graphics and language (called S) and have your work easily accessible to many users. -- http://mail.python.org/mailman/listinfo/python-list
Re: Looking for a high performance web server written in Python, and supports CGI/FastCGI
On 07/07/06, Jack [EMAIL PROTECTED] wrote: I just did some testing between CherryPy's web server and lighttpd. My test was very simple and I used ab.exe for this purpose. CherryPy web server can serve about 140 simple request / second, while lighttpd can handle around 400 concurrent requests. You haven't really said much about your requirements though. Perhaps if you describe them in more detail (for example, what does high performance mean to you?) someone can make a more useful recommendation. Karrigell has an async server, in standalone mode it won't be as fast as lighttpd but its simpler to use and code in than cherrypy. However, it can also work behind lighttpd, so you might get a good mix of server speed and fast development time. http://www.karrigell.com HTH :) -- http://mail.python.org/mailman/listinfo/python-list
COM Makepy Question
Using Pythonwin's COM Makepy utility I created a COM wrapper around an OCX file that's used to communicate with a magstripe card reader. The wrapper was created without incident and I can invoke any get type of method without a problem. But whenever I attempt to invoke any of the set type of methods I receive an error message that states: (-2147352567, 'Exception occurred.', (0, 'ctlUSBHID', 'Client Site not available', None, 1000398, -2146827890), None) Googling around I see that this error message indicates an ActiveX control that's being referenced without residing within a container. Not sure if this is something that I can fix myself within the Makepy COM wrapper or if I have to rely on the vendor shipping an updated OCX file. I did see a Python discussion thread where someone else ran into a similar problem and had to wait for the vendor to ship a revised OCX file. Dolphin Smalltalk has a similar COM wrapper utility and the same exact error occurs. The OCX file is ideally suited for Visual Basic but I don't have that compilation environment setup on my workstation to try out. Anyone familiar with such matters? I have contacted the vendor to try to initiate things on that end. But if there's something I can do to circumvent that route using Python I'd give it a go. -- http://mail.python.org/mailman/listinfo/python-list
Re: Nested scopes, and augmented assignment
Fredrik Lundh wrote:
Bruno Desthuilliers wrote:
Certainly not. Nested scopes allow closures, which allow decorators and
lot of *very* useful things.
decorators can be trivially implemented as classes, of course. it's a
bit unfortunate that many people seem to think that decorators *have* to
be implemented as nested functions, rather than arbitrary callables.
Your of course right - and I should know better since AFAIK (IOW please
correct me if I'm wrong), closures and classes are somewhat
interchangeable.
OTHO, using closures can make things far more simple - just like having
functions being objects is not absolutely necessary for having HOF-like
features, but can make HOF much more simple. If you take back all these
kind of features from Python, you end up with something that's not
really better than Java - and then me run away screaming !-)
Thanks for the correction anyway.
--
bruno desthuilliers
python -c print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in '[EMAIL PROTECTED]'.split('@')])
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Re: Looking for a high performance web server written in Python, and supports CGI/FastCGI
Tim Williams wrote: On 07/07/06, Jack [EMAIL PROTECTED] wrote: I just did some testing between CherryPy's web server and lighttpd. My test was very simple and I used ab.exe for this purpose. CherryPy web server can serve about 140 simple request / second, while lighttpd can handle around 400 concurrent requests. You haven't really said much about your requirements though. Perhaps if you describe them in more detail (for example, what does high performance mean to you?) someone can make a more useful recommendation. Karrigell has an async server, in standalone mode it won't be as fast as lighttpd but its simpler to use and code in than cherrypy. However, it can also work behind lighttpd, so you might get a good mix of server speed and fast development time. http://www.karrigell.com Yes, agree about Karrigell's quick development time - an almost flat learning curve if you've programmed for the web before, and none of the arcana which you can run into elsewhere. high performance? - I'm using it to provide an intranet for a small library with *three* networked computers - performance is impeccable! Gerard -- http://mail.python.org/mailman/listinfo/python-list
Re: multithreading and shared dictionary
Stéphane Ninin wrote: Hello, Probably a stupid question, but I am not a multithreading expert... I want to share a dictionary between several threads. Actually, I will wrap the dictionary in a class and want to protect the sensitive accesses with locks. The problem is I am not sure which concurrent access to the dictionary could cause a problem. I assume that two write's on the same location would be, but what if one thread does mydict['a'] = something and another thread: mydict['b'] = something else Is a lock required in such a case ? i dont think you need to use a lock for these cases because mydict['a'] refers to mydict['b'] memory locations (i may be wrong because i dont know Python implementation). Just a recomendation, you could also use a Queue object to control write access to the dictionary. -Cheers -- http://mail.python.org/mailman/listinfo/python-list
Re: wxPython and Linux dependencies
[EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Error message cannot find wx infact I have wxpython in /usr/lib/ I installed it using the rpms given on the wxPython website. Do I need to set some path or something. I vaguely remember that wxWindows changed name to wxWidgets and wxPython changed convention along the way so that one should do: include wx and reference wx stuff as wxdotsomething instead of the old way of: from wxPython include * and reference as f.ex. wxDialog: This is from memory, I cannot remember what version of wxPython the change happened - but I was bitten by it. Check the versions of wxPython on RedHat and Ubuntu - Ubuntu will almost certainly be newer than RedHat! -- http://mail.python.org/mailman/listinfo/python-list
Re: searching for strings (in a tuple) in a string
On Thu, 06 Jul 2006 04:45:35 -0700, manstey wrote:
Hi,
I often use:
a='yy'
tup=('x','yy','asd')
if a in tup:
...
but I can't find an equivalent code for:
a='xfsdfyysd asd x'
tup=('x','yy','asd')
if tup in a:
...
Of course you can't. Strings don't contain tuples, since they are utterly
different kinds of objects.
I can only do:
if 'x' in a or 'yy' in a or 'asd' in a:
...
but then I can't make the if clause dependent on changing value of tup.
Sure you can.
a = 'xfsdfyysd asd x'
tup = ('x','yy','asd')
for item in tup:
if item not in a:
print Item missing
break
else:
print All items found.
It's a little verbose, but you can stick it into a function definition and
use it as a one-liner.
Or, use a list comprehension:
a = 'xfsdfyysd asd x'
tup = ('x','yy','asd')
if [item for item in tup if item in a]:
print Some items found.
else:
print No items found.
Or, you can use filter:
a = 'xfsdfyysd asd x'
tup = ('x','yy','asd')
if filter(lambda item, a=a: item in a, tup):
print Some items found.
else:
print No items found.
However, keep in mind that in has a subtly different effect in strings
and tuples.
x in (x, y) is true, but x in (xy, yy) is not, as you would
expect. However, the situation for strings isn't quite the same:
x in x y is true, but so is x in xx yy.
One way around that is to convert your string a into a list:
a = 'xfsdfyysd asd x'
a = a.split() # split on any whitespace
and now your tests will behave as you expected.
--
Steven.
--
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RE: COM Makepy Question
It seems that the ocx only works in a GUI environment. Perhaps you could try to embed the ocx in a pythonwin dialog which you create invisible since the dialog is then a control container see Python24\Lib\site-packages\pythonwin\pywin\Demos\ocx\ocxtest.py Stefan -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of gregarican Sent: Friday, July 07, 2006 1:37 PM To: python-list@python.org Subject: COM Makepy Question Using Pythonwin's COM Makepy utility I created a COM wrapper around an OCX file that's used to communicate with a magstripe card reader. The wrapper was created without incident and I can invoke any get type of method without a problem. But whenever I attempt to invoke any of the set type of methods I receive an error message that states: (-2147352567, 'Exception occurred.', (0, 'ctlUSBHID', 'Client Site not available', None, 1000398, -2146827890), None) Googling around I see that this error message indicates an ActiveX control that's being referenced without residing within a container. Not sure if this is something that I can fix myself within the Makepy COM wrapper or if I have to rely on the vendor shipping an updated OCX file. I did see a Python discussion thread where someone else ran into a similar problem and had to wait for the vendor to ship a revised OCX file. Dolphin Smalltalk has a similar COM wrapper utility and the same exact error occurs. The OCX file is ideally suited for Visual Basic but I don't have that compilation environment setup on my workstation to try out. Anyone familiar with such matters? I have contacted the vendor to try to initiate things on that end. But if there's something I can do to circumvent that route using Python I'd give it a go. -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: eval to dict problems NEWB going crazy !
On Thu, 06 Jul 2006 03:34:32 -0700, manstey wrote:
Hi,
I have a text file called a.txt:
# comments
[('recId', 3), ('parse', {'pos': u'np', 'gen': u'm'})]
[('recId', 5), ('parse', {'pos': u'np', 'gen': u'm'})]
[('recId', 7 ), ('parse', {'pos': u'np', 'gen': u'm'})]
I read it using this:
filAnsMorph = codecs.open('a.txt', 'r', 'utf-8') # Initialise input
file
dicAnsMorph = {}
for line in filAnsMorph:
if line[0] != '#': # Get rid of comment lines
x = eval(line)
dicAnsMorph[x[0][1]] = x[1][1] # recid is key, parse dict is
value
But it crashes every time on x = eval(line). Why is this?
Some people have incorrectly suggested the solution is to remove the
newline from the end of the line. Others have already pointed out one
possible solution.
I'd like to ask, why are you using eval in the first place?
The problem with eval is that it is simultaneously too finicky and too
powerful. It is finicky -- it has problems with lines ending with a
carriage return, empty lines, and probably other things. But it is also
too powerful. Your program wants a specific piece of data, but eval
will accept any string which is a valid Python expression. eval is quite
capable of giving you a dictionary, or an int, or just about anything --
and, depending on your code, you might not find out for a long time,
leading to hard-to-debug bugs.
Is your data under your control? Could some malicious person inject data
into your file a.txt? If so, you should be aware of the security
implications:
# comment
[('recId', 3), ('parse', {'pos': u'np', 'gen': u'm'})]
[('recId', 5), ('parse', {'pos': u'np', 'gen': u'm'})]
# line injected by a malicious user
__import__('os').system('echo if I were bad I could do worse')
[('recId', 7 ), ('parse', {'pos': u'np', 'gen': u'm'})]
Now, if the malicious user can only damage their own system, maybe you
don't care -- but the security hole is there. Are you sure that no
malicious third party, given *only* write permission to the file a.txt,
could compromise your entire system?
Personally, I would never use eval on any string I didn't write myself. If
I was thinking about evaluating a user-string, I would always write a
function to parse the string and accept only the specific sort of data I
expected. In your case, a quick-and-dirty untested function might be:
def parse(s):
Parse string s, and return a two-item list like this:
[tuple(string, integer), tuple(string, dict(string: string)]
def parse_tuple(s):
Parse a tuple with two items exactly.
s = s.strip()
assert s.startswith(()
assert s.endswith())
a, b = s[1:-1].split(,)
return (a.strip(), b.strip())
def parse_dict(s):
Parse a dict with two items exactly.
s = s.strip()
assert s.startswith({)
assert s.endswith(})
a, b = s[1:-1].split(,)
key1, value1 = a.strip().split(:)
key2, value2 = b.strip().split(:)
return {key1.strip(): value1.strip(), key2.strip(): value2.strip()}
def parse_list(s):
Parse a list with two items exactly.
s = s.strip()
assert s.startswith([)
assert s.endswith(])
a, b = s[1:-1].split(,)
return [a.strip(), b.strip()]
# Expected format is something like:
# [tuple(string, integer), tuple(string, dict(string: string)]
L = parse_list(s)
T0 = parse_tuple(L[0])
T1 = parse_tuple(L[1])
T0 = (T0[0], int(T0[1]))
T1 = (T1[0], parse_dict(T1[1]))
return [T0, T1]
That's a bit more work than eval, but I believe it is worth it.
--
Steven
--
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Re: COM Makepy Question
Gotcha. That makes perfect sense looking at the container references others made during my Googling adventures. Thanks! Stefan Schukat wrote: It seems that the ocx only works in a GUI environment. Perhaps you could try to embed the ocx in a pythonwin dialog which you create invisible since the dialog is then a control container see Python24\Lib\site-packages\pythonwin\pywin\Demos\ocx\ocxtest.py Stefan -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of gregarican Sent: Friday, July 07, 2006 1:37 PM To: python-list@python.org Subject: COM Makepy Question Using Pythonwin's COM Makepy utility I created a COM wrapper around an OCX file that's used to communicate with a magstripe card reader. The wrapper was created without incident and I can invoke any get type of method without a problem. But whenever I attempt to invoke any of the set type of methods I receive an error message that states: (-2147352567, 'Exception occurred.', (0, 'ctlUSBHID', 'Client Site not available', None, 1000398, -2146827890), None) Googling around I see that this error message indicates an ActiveX control that's being referenced without residing within a container. Not sure if this is something that I can fix myself within the Makepy COM wrapper or if I have to rely on the vendor shipping an updated OCX file. I did see a Python discussion thread where someone else ran into a similar problem and had to wait for the vendor to ship a revised OCX file. Dolphin Smalltalk has a similar COM wrapper utility and the same exact error occurs. The OCX file is ideally suited for Visual Basic but I don't have that compilation environment setup on my workstation to try out. Anyone familiar with such matters? I have contacted the vendor to try to initiate things on that end. But if there's something I can do to circumvent that route using Python I'd give it a go. -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: wxPython and Linux dependencies
Nick Vatamaniuc wrote: To see where Python is looking for libraries open an interactive Python prompt and type import sys print sys.path After doing this you will see something like 'C:\\Python24\\lib\\site-packages\\wx-2.6-msw-ansi' (from my system) in the list, otherwise it isn't finding wxPython. Also, probably just looking at the version of Python you are using when the interactive prompt starts up might give you a clue. If it's different than the version you installed wxPython in, then that's why it isn't finding it. (But I don't know if the version that the interactive prompt uses is necessarily the version that will be used to run your program, assuming you have multiple versions installed, so maybe these methods won't be perfectly accurate. Not sure how it gets decided which version to use if you have more than one, especially on Unix systems.) -- http://mail.python.org/mailman/listinfo/python-list
Re: How to increase the window sinze in python?
Fredrik Lundh wrote: arvind wrote: i want to inctrease the window size in python and make it as big as normal window. at the same time i want to change the background colour of the screen. what's the solution? what window is this ? /F and what does as big as a normal window mean? :) that might depend on the OS, too -- http://mail.python.org/mailman/listinfo/python-list
Re: Looking for a high performance web server written in Python, and supports CGI/FastCGI
On 7 Jul 2006 06:27:43 -0700, Gerard Flanagan [EMAIL PROTECTED] wrote: Tim Williams wrote: On 07/07/06, Jack [EMAIL PROTECTED] wrote: I just did some testing between CherryPy's web server and lighttpd. My test was very simple and I used ab.exe for this purpose. CherryPy web server can serve about 140 simple request / second, while lighttpd can handle around 400 concurrent requests. You haven't really said much about your requirements though. Perhaps if you describe them in more detail (for example, what does high performance mean to you?) someone can make a more useful recommendation. Karrigell has an async server, in standalone mode it won't be as fast as lighttpd but its simpler to use and code in than cherrypy. However, it can also work behind lighttpd, so you might get a good mix of server speed and fast development time. http://www.karrigell.com Yes, agree about Karrigell's quick development time - an almost flat learning curve if you've programmed for the web before, and none of the arcana which you can run into elsewhere. high performance? - I'm using it to provide an intranet for a small library with *three* networked computers - performance is impeccable! If you disable the Reverse-DNS lookups in one of the python (not Karrigell) web modules (I'll dig out a previous post somewhere about this), it speeds up karrigell tremendously, my apps aren't huge, but I have no problems with karrigell across the internet :) -- http://mail.python.org/mailman/listinfo/python-list
Re: Web Browser Pygame Plug-in?
Are there security issues too? Would you remove potentially harmful Python libraries for the plugin, not allow system calls, etc? Would you only allow file system access in one area? I guess you'd just copy however Java applets work? But run faster ;-) On 7/7/06, Shane Hathaway [EMAIL PROTECTED] wrote: Gregory Piñero wrote: I was just idley curious on what it would take to make a web plug-in for Pygame. I'm picturing it working the way my browser currently shows flash games. Is such an idea even possible? Has anyone attempted this? I once played with a similar idea. Yes, it's possible, although platform differences make the idea non-trivial. Specifically, I ran into difficulty when I discovered that it's not easy on Linux to load a dynamic library (such as libpython.so) which in turn loads other dynamic libraries (such as native Python modules), since the library search path is not modifiable at runtime. A possible workaround is to launch a separate process which projects into the browser window. I don't know what surprises may pop up on other platforms. Shane -- Gregory Piñero Chief Innovation Officer Blended Technologies (www.blendedtechnologies.com) -- http://mail.python.org/mailman/listinfo/python-list
Re: Making a time series analysis package in python - advice or assistance sought
In article [EMAIL PROTECTED], [EMAIL PROTECTED] wrote: Ray Tomes wrote: Hi Folks I am an old codger who has much experience with computers in the distant past before all this object oriented stuff. Also I have loads of software in such languages as FORTRAN and BASIC, QBASIC etc that is very useful except that it really doesn't like to run on modern operating systems and has hopeless graphics resolution and lack of ease of use in some ways. The Fortran code, which I assume is Fortran 77 or earlier, should run fine on modern operating systems using free (g77, g95, or gfortran) or commercial compilers. My desire is to get all the facilities available in my old programs working in a modern platform with flexible and high-res graphics and easy to use. Ideally I might find some good coders that are interested in the subject who would assist me, alternatively some help in getting started because there is so much info and so many resources and libraries etc that I don't know where to start. My package will have the following capabilities: 1. Able to read time series data in a variety of formats. 2. Able to create, manipulate and save time series files. 3. Able to do vector arithmetic on time series, including dozens of functions. Fortran 90 and later versions have array operations, as does NumPy. You could convert parts of the FORTRAN code to F90 4. Loop and macro facilities to simplify repetitive stuff. 5. Flexible high-resolution graphic presentation. 6. Built in functions to include: FFT / fourier analysis, MESA / maximum entropy spectral analysis, multiple regression, canonical correlation etc etc etc. I have code for all these mostly in FORTRAN, some QBASIC. The applications of the package include: 1. Analysis of time series data from many branches of science. 2. Economic / business models including forecasting. 3. Markets, stocks, commodities forecasting. 4. Interdisciplinary causal analysis. 5. Many more There exist public domain codes for many of the topics you mention, and I think several are part of NumPy. Many statistical algorithms are in R, for which the underlying C and Fortran code is available. I suggest that you identify which of your algorithms are not publicly available and focus on those, making an R package of them. I am interested in MESA. Then you can exploit the R graphics and language (called S) and have your work easily accessible to many users. The original poster has received much good advice. I'll reinforce a couple of points: 1. Flexibility, high usability, and appealing graphics indeed are worth the effort. They can be achieved withOUT object orientation, though, and you absolutely should consider modernization of your existing *BASIC, Fortran, and so on. Don't let lack of a compiler block your progress; I'm sure we can help locate appropriate ones for you. 2. Python is indeed a great vehicle for this sort of work, as I've argued in the past URL: http://phaseit.net/claird/comp.programming/open_source_science.html . For your particular circumstances, though, I applaud Mr. Beliavsky's suggestion that you look into R URL: http://www-106.ibm.com/developerworks/linux/library/l-sc16.html . You might get even quicker satisfaction, with a somewhat lower long-term ceiling, through Yorick URL: http://wiki.tcl.tk/yorick . I understand that you were thinking in terms of enlistment of fellow developers. You might well be best off, though, with another round of research and experimentation on your own. -- http://mail.python.org/mailman/listinfo/python-list
Re: XML-RPC + SimpleHTTPServer question
Thank you very much, Fredrik. Your code and suggestion worked perfectly. I haven't benchmarked the plain HTTP post vs Binary wrapper, but strangely even using the naive Binary wrapper in Python sends files much faster than how Java + Axis wraps byte arrays in SOAP messages. Jeremy -- http://mail.python.org/mailman/listinfo/python-list
Re: wxPython and Linux dependencies
Let me explain and give you some more details. When I type python at the command prompt it shows the following info. python 2.3.4 (#Feb 01 2005), GCC 3.4.3 20041212 Red Hat 3.4.3-9.EL4 on linux2 In /usr/lib/ there are two directories called python 2.3 and python 2.4 In /usr/lib/python2.3/site-packages I could NOT find anything related to wx and in particular wx-2.6-gtk2-unicode wx.pth wxversion.py wxversion.pyc In /usr/lib/python2.4/ there is only one folder called site-packages and NO other files. So /usr/lib/python2.4/site-packages/ has only one folder called wx-2.6-gtk2-unicode and a file called wx.pth and another file wx.version.py (and its compiler version wx.version.pyc). wx.pth contains wx-2.6-gtk2-unicode So, what my feeling is that I have python 2.3 and wx package is for 2.4. So my installed variant cannot find the wx package. What is the easiest way from this point on to get my small wxPython app running ??? Every help is appreciated. Nick Vatamaniuc wrote: John, To see where Python is looking for libraries open an interactive Python prompt and type import sys print sys.path You will get a list of paths where Python will look for modules. Also check to see if you have the PYTHONPATH environment variable set. If /usr/lib is not in the path list then Python won't be able to import wx from there. To test your wx app, you can append to sys.path the path of your wx module then try to import again. Hope this helps, Nick V. [EMAIL PROTECTED] wrote: How can we find that it is not using the right version of Python ? John Salerno wrote: [EMAIL PROTECTED] wrote: Error message cannot find wx infact I have wxpython in /usr/lib/ I installed it using the rpms given on the wxPython website. Do I need to set some path or something. Could it be that it is trying to use another, pre-installed version of Python -- one which doesn't have wxPython installed with it? -- http://mail.python.org/mailman/listinfo/python-list
Re: Web Browser Pygame Plug-in?
Shane Wrote: Ah, so you also want to distribute untrusted Python code. That's fairly hard. There's a discussion about it on Python-Dev right now. Well, I want to write a game in Pygame, and people can just go to my website and play it within their browser. I guess that would be untrusted code? -- http://mail.python.org/mailman/listinfo/python-list
Re: Web Browser Pygame Plug-in?
On Thu, 2006-07-06 at 14:24 -0400, Gregory Piñero wrote: Hi guys, I was just idley curious on what it would take to make a web plug-in for Pygame. I'm picturing it working the way my browser currently shows flash games. Is such an idea even possible? Has anyone attempted this? At a previous position, I looked at this. Not for a game but for embedding our components in IE Mozilla. I started work on a Mozilla (this was pre-firefox) plugin that was based on pyxpcom. The company told me to stop development due to changing business stuff, and I convinced them to release the non-working source. However, I have since lost the source code. It was a strange situation as I wasn't allowed to start a sf project, and hosted the source on my website. (they didn't want to be seen supporting open source if that makes any sense...esp since the project was largely python based). Unfortunately, sometime over the course of 2 web host changes and 1 move from NC to PA I lost the source. It might be available in a mailing list archive of the pyxpcom list. (I make no claims of quality code, this was during extra-special heavy duty start-up mode and I was getting maybe 6 hours of downtime a day for meals, sleep and saying Hi to my wife... so if you do manage to find the code, keep that in mind. :) ) It was not, as I recall, overly difficult at least conceptually since most of the cross-platform hurdles were handled by pyxpcom. Just follow the examples in pyxpcom and in the netscape documentation to get a basic plugin. This would load a xpcom component and start it. It was just a matter of creating the pyxpcom component and that was it. (Pushing aside implementation details like getting pyxpcom installed on the machine, and how the extent of the plugin's area gets passed in and a bunch of other niggling little details.) Mind you this was back in 2002, so my memory may be simplifying things slightly, and there is always the chance that I was just flat out wrong from beginning to end. :) Also, I'd spent maybe 10 hours on the project before I was told to stop, so who knows what issues might be laying under the surface. For example, getting the same concept to work in IE ended up taking a great deal of development as we ended up using trolltech's ActiveQT to wrap our components (which were already QT classes). At anyrate, I'm 90% certain that it can be done and think it's a rockin' good idea. I might return to it in future, as my new employer may have a need, but that wouldn't be until at least next year, if not the year after that. -- Gregory Piñero Chief Innovation Officer Blended Technologies (www.blendedtechnologies.com) -- http://mail.python.org/mailman/listinfo/python-list
Re: Launching multiple instances of a program with win32com.client.Dispatch?
Hi Roger, Thanks for the response, but DispatchEx seems to do the exact same thing as Dispatch in my case; there is still only one processID and one instance of my program (I forgot to mention that I also need two unique processID's to keep track of them). I have also tried: ### AB1 = pythoncom.CoCreateInstance(Broker.Application,None,pythoncom.CLSCTX_SERVER,pythoncom.IID_IDispatch) AB2 = pythoncom.CoCreateInstance(Broker.Application,None,pythoncom.CLSCTX_SERVER,pythoncom.IID_IDispatch) win32com.client.Dispatch(AB1) win32com.client.Dispatch(AB2) ### That also seems to do the exact same thing. Any other ideas of things I might try? Roger Upole wrote: win32com.client.DispatchEx should create a new instance. Roger [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Hi there, I am trying to launch a program called AmiBroker using the command: AB = win32com.client.Dispatch(Broker.Application) However, I have a dual-core CPU and would like to launch two instances of AmiBroker. I know it is possible to run two instances simultaneously since it is easy to do manually by double-clicking the AmiBroker.exe file twice. However, when I write two lines of code like this: AB = win32com.client.Dispatch(Broker.Application) AB2 = win32com.client.Dispatch(Broker.Application) and proceed to address these objects, they interfere with each other since both AB and AB2 are grabbing the same instance of AmiBroker. If I try to run two separate Python scripts, each one containing a win32com.client.Dispatch(Broker.Application) comand, the same problem happens (where even though the objects are named differently, they do not each launch an instance of the program; the first one launches it and the second one just grabs it). Does anyone know how to force two separate program launches rather than having both Dispatch commands access the same object? I would be incredibly thankful to anyone who could offer some help with this. Thank you very much, Tyler -- http://mail.python.org/mailman/listinfo/python-list
Re: Python SOAP and XML-RPC performance extremely low?
Jack No, I'm not using any accelerator. The code is extremely simple Jack (from toofpy): ... To use sgmlop, just download and install it. Your code doesn't need to change. The xmlrpclib module detects its presence and uses it automatically. As someone else noted though, a five-second delay for such a small example doesn't seem to be an XML-RPC problem. A simple round-trip to my XML-RPC server running on the localhost takes about 5 *milli*seconds. That's with sgmlop installed, but even without it, I can't imagine it taking more than 50-100 ms. Skip -- http://mail.python.org/mailman/listinfo/python-list
Re: what's wrong here? (search script)
Brendan Fay wrote: I figured it out. Is there any way to delete your own posts? Brendan Fay wrote: Dear Someone: I have written a script that accesses the googleAPI through pygoogle and saves each of the ten documents as a .txt file by using a specific function for each respective file type (.doc, .pdf, .html) to convert it to such. Everything works fine, except that I am trying to make it search and return another result in the event that a file type other than .doc, .pdf, .html, or .txt comes up. Python is new to me and I'm not sure why my method doesn't work. I'd really appreciate any advice; here is the relevant code: def searchhelper(words, start=0, max=10): data = google.doGoogleSearch(words) objlist = data.results urllist = map((lambda x: x.URL), objlist) return urllist def searchhelper2(initwords, urls, counter): for url in urls: if findinlink(url, 'pdf'): # all these functions are defined elsewhere, convertpdf(url) # fbut they definitely are working properly elif findinlink(url, 'htm'): converthtml(url) elif findinlink(url, 'txt'): urllib.urlretrieve(url, parse(x)) elif findinlink(url, 'doc'): convertdoc(url) elif not findinlink(url, '.'): converthtml(url) else: urllist = urls[counter + 1:] + searchhelper(initwords, 11 + counter, 1) # (I'm searchhelper2(initwords, urllist, counter + 1)# assuming this is where I have # erred; however, I'm not sure) def search(initwords): urllist = searchhelper(initwords) searchhelper2(initwords, urllist, 0) Thanks, Brendan Instead of deleting the previous post, you should post the solution for all to learn from. desNotes -- http://mail.python.org/mailman/listinfo/python-list
Re: Python SOAP and XML-RPC performance extremely low?
[EMAIL PROTECTED] wrote: As someone else noted though, a five-second delay for such a small example doesn't seem to be an XML-RPC problem. A simple round-trip to my XML-RPC server running on the localhost takes about 5 *milli*seconds. even if the service you're connecting is waiting 5 seconds before it sends the response ? ;-) /F -- http://mail.python.org/mailman/listinfo/python-list
Re: Error type for shelve.open()
[EMAIL PROTECTED] wrote: I tried what you said and it looked like maybe AttributeError, but that didn't work either. This code snippet: import shelve from traceback import format_exc try: db = shelve.open(meh, r) except: print format_exc() Gave me this output: Traceback (most recent call last): File test.py, line 5, in ? db = shelve.open(meh, r) File /usr/lib/python2.4/shelve.py, line 231, in open return DbfilenameShelf(filename, flag, protocol, writeback, binary) File /usr/lib/python2.4/shelve.py, line 212, in __init__ Shelf.__init__(self, anydbm.open(filename, flag), protocol, writeback, binary) File /usr/lib/python2.4/anydbm.py, line 77, in open raise error, need 'c' or 'n' flag to open new db error: need 'c' or 'n' flag to open new db Exception exceptions.AttributeError: DbfilenameShelf instance has no attribute 'writeback' in ignored Do you know what the error is? No. If you tried catching AttributeError and it didn't work then I'd guess that the AttributeError is a secondary result of the initial error. This part of the traceback, File /usr/lib/python2.4/anydbm.py, line 77, in open raise error, need 'c' or 'n' flag to open new db error: need 'c' or 'n' flag to open new db indicates that some sort of custom error, probably defined in the anydbm.py module. Catching the execption and binding it to a var, try: ... db = shelve.open(meh, r) ... except Exception, err: ... E = err ... Exception exceptions.AttributeError: DbfilenameShelf instance has no attribute 'writeback' in ignored E anydbm.error instance at 0xb7d8270c So: from anydbm import error try: ... db = shelve.open(meh, r) ... except error: ... print 'Aha! got it!' ... Aha! got it! Exception exceptions.AttributeError: DbfilenameShelf instance has no attribute 'writeback' in ignored Well, that catches the error, but I don't know what's going on with the additional AttributeError or what to do about it. Peace, ~Simon -- http://mail.python.org/mailman/listinfo/python-list
how can I avoid abusing lists?
I have this code:
type1 = [0]
type2 = [0]
type3 = [0]
map = {0:type1, 1:type1, 2:type3, 3:type1, 4:type2} # the real map is
longer than this
def increment(value):
map[value][0] += 1
increment(1)
increment(1)
increment(0)
increment(4)
#increment will actually be called many times through other functions
print type1[0], type2[0], type3[0]
#should print 3 1 0
This is exactly what I want to do: every time I encounter this kind of
value in my code, increment the appropriate type by one. Then I'd like
to go back and find out how many of each type there were. This way
I've written seems simple enough and effective, but it's very ugly and
I don't think it's the intended use of lists. Does anyone know a
cleaner way to have the same funtionality?
Thanks,
THN
--
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Re: how can I avoid abusing lists?
Just forget the lists...
counters = {0:0, 1:0, 2:0, 3:0, 4:0}
def increment(value):
counters[value] += 1
increment(1)
increment(1)
increment(3)
increment(4)
print counters[0]
0
print counters[1]
2
print coutners[2]
0
print counters[3]
1
print coutners[4]
1
The increment function should probably include a try:...except:
statement to catch KeyErrors that would arise if you passed a value
that is not a key in the counters dictionary.
Rob C
--
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Re: eval to dict problems NEWB going crazy !
[('recId', 3), ('parse', {'pos': u'np', 'gen': u'm'})]
[('recId', 5), ('parse', {'pos': u'np', 'gen': u'm'})]
# line injected by a malicious user
__import__('os').system('echo if I were bad I could do worse')
[('recId', 7 ), ('parse', {'pos': u'np', 'gen': u'm'})]
I'm curious, if you disabled import, could you make eval safe?
For example:
eval(__import__('os').system('echo if I were bad I could do worse'))
if I were bad I could do worse
0
eval(__import__('os').system('echo if I were bad I could do worse'),
{'__import__': lambda x:None})
Traceback (most recent call last):
File stdin, line 1, in ?
File string, line 0, in ?
AttributeError: 'NoneType' object has no attribute 'system'
So, it seems to be possible to disable access to imports, but is this
enough? Are there other ways to access modules, or do damage via
built-in commands?
It seems that there must be a way to use eval safely, as there are
plenty of apps that embed python as a scripting language - and what's
the point of an eval function if impossible to use safely, and you have
to write your own Python parser!!
--
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Re: Looking for a high performance web server written in Python, and supports CGI/FastCGI
I wrote the last posting at late late night and I didn't know what I was typing at that time ;-p I didn't mean the test with CherryPy was not concurrent connections, or the test with lighttpd was all concurrent connections. I actually tried both concurrent (-c in ab command line) and non-concurrent (without -c in ab command line) and I tried the threading and threadpooling in CherryPy. The result did not vary much. This article http://www.cherrypy.org/wiki/CherryPySpeed says CherryPy can process around 400-500 requests/second. It's set up is: Pentium M 1.6, 1G RAM, Windows XP2 laptop, test done with apache 2.0.41 ab. I have a slightly better hardware set up: Pentium M 1.7MHz, 1.5G RAM on Windows XP2 laptop, test done with Apache 2.2 ab However, I don't get even close. The best I get is around 140 requests/second. I'm using the same test script as the CherryPy test with slight modification just to make it run. As a matter of fact, the Cygwin build of lighttpd only gets around 430 requests/second for a 2-byte static file. I disabled firewall and antivirus on the box when tests were done. Any idea about the huge difference? It would be very interesting if some CherryPy (or python) users can post their performance benchmarks. Jack Jack [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] I just did some testing between CherryPy's web server and lighttpd. My test was very simple and I used ab.exe for this purpose. CherryPy web server can serve about 140 simple request / second, while lighttpd can handle around 400 concurrent requests. You haven't really said much about your requirements though. Perhaps if you describe them in more detail (for example, what does high performance mean to you?) someone can make a more useful recommendation. Jean-Paul -- http://mail.python.org/mailman/listinfo/python-list
Re: how can I avoid abusing lists?
Rob Cowie wrote:
Just forget the lists...
counters = {0:0, 1:0, 2:0, 3:0, 4:0}
Or perhaps just use a list:
counters = [0,0,0,0]
def inc(v):
... counters[v] += 1
...
inc(1)
inc(1)
inc(3)
counters
[0, 2, 0, 1]
The increment function should probably include a try:...except:
Likewise for IndexErrors
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Publishing ODBC database content as PDF
Publishing ODBC database content as PDF: A blog post by me on how to do this, using my PDF conversion toolkit, xtopdf. This is sample code from my next upcoming release of xtopdf, which will support more input formats, such as CSV, XLS, TDV and ODBC data. http://jugad.livejournal.com/2006/07/07/ Enjoy, and feedback welcome. Vasudev Vasudev Ram http://www.geocities.com/vasudevram PDF conversion toolkit: http://sourceforge.net/projects/xtopdf -- http://mail.python.org/mailman/listinfo/python-list
Re: Python SOAP and XML-RPC performance extremely low?
As someone else noted though, a five-second delay for such a small example doesn't seem to be an XML-RPC problem. A simple round-trip to my XML-RPC server running on the localhost takes about 5 *milli*seconds. Fredrik even if the service you're connecting is waiting 5 seconds Fredrik before it sends the response ? ;-) Well, yeah I suppose that might have an effect. ;-) I saw your earlier response about a minute after I responded... Skip -- http://mail.python.org/mailman/listinfo/python-list
Re: how can I avoid abusing lists?
Thomas Nelson wrote:
I have this code:
type1 = [0]
type2 = [0]
type3 = [0]
map = {0:type1, 1:type1, 2:type3, 3:type1, 4:type2} # the real map is
longer than this
def increment(value):
map[value][0] += 1
increment(1)
increment(1)
increment(0)
increment(4)
#increment will actually be called many times through other functions
print type1[0], type2[0], type3[0]
#should print 3 1 0
This is exactly what I want to do: every time I encounter this kind of
value in my code, increment the appropriate type by one. Then I'd like
to go back and find out how many of each type there were. This way
I've written seems simple enough and effective, but it's very ugly and
I don't think it's the intended use of lists. Does anyone know a
cleaner way to have the same funtionality?
Thanks,
THN
In this case, lists are unnecessary. Just use ints.
Since your type codes are ints, you can create your map like this
(assuming 10 types):
map = dict((n, 0) for n in range(10))
Then your increment function becomes:
def increment(value):
map[value] += 1
And instead of,
print type1[0], type2[0], type3[0]
say,
print map[0], map[1], map[2]
Peace,
~Simon
--
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Re: Publishing ODBC database content as PDF
Oops: The source indentation - tabs - is removed in the blog post, by the LiveJournal software. You will need to insert them at the appropriate places, for which you will need to know Python and understand the code, at least the overall logic. I'll post the code as a zip file (with some other samples) on one of my sites, and then put a link to it here. - Vasudev. vasudevram wrote: Publishing ODBC database content as PDF: A blog post by me on how to do this, using my PDF conversion toolkit, xtopdf. This is sample code from my next upcoming release of xtopdf, which will support more input formats, such as CSV, XLS, TDV and ODBC data. http://jugad.livejournal.com/2006/07/07/ Enjoy, and feedback welcome. Vasudev Vasudev Ram http://www.geocities.com/vasudevram PDF conversion toolkit: http://sourceforge.net/projects/xtopdf -- http://mail.python.org/mailman/listinfo/python-list
Re: how can I avoid abusing lists?
Just forget the lists...
counters = {0:0, 1:0, 2:0, 3:0, 4:0}
You'll notice that the OP's code had multiple references to the
same counter (0, 1, and 3 all mapped to type1)
The OP's method was about as good as it gets. One might try to
redo it with an accumulator class of some sort:
class Accumulator(object):
def __init__(self, startvalue = 0):
self.counter = startvalue
def __iadd__(self, qty):
self.counter += qty
return self.counter
def add(self, qty = 1):
self.counter += qty
def __int__(self):
return self.counter
def __str__(self):
return str(self.counter)
def __repr__(self):
return 'Accumulator 0x%x (%s)' % (
id(self), str(self.counter))
type1 = Accumulator()
type2 = Accumulator()
type3 = Accumulator()
d = {0:type1, 1:type1, 2:type3, 3:type1, 4:type2}
print ','.join([str(x) for x in d.values()])
# all zeros
d[0] += 1
print ','.join([str(x) for x in d.values()])
# d[0], d[1], and d[3] have incremented
d[2].add()
d[2].add()
print ','.join([str(x) for x in d.values()])
# d[2] has now incremented twice
d[4].add(5)
print ','.join([str(x) for x in d.values()])
# d[4] has now incremented by 5
Some of the syntactic sugar of the class could likely be left out
if you just want, but it does the same thing as the OP's, with a
diff. spin on the syntax.
-tkc
--
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Re: how can I avoid abusing lists?
Thomas Nelson wrote:
This is exactly what I want to do: every time I encounter this kind of
value in my code, increment the appropriate type by one. Then I'd like
to go back and find out how many of each type there were. This way
I've written seems simple enough and effective, but it's very ugly and
I don't think it's the intended use of lists. Does anyone know a
cleaner way to have the same funtionality?
Thanks,
THN
Just assign each type a number (type1 - 1, type2 - 2) and then count
the values as usual
def count(map, it):
d={}
for x in it:
x = map[x] #only difference from normal count function
#d[x]=d.get(x,0)+1
if x in d:
d[x] +=1
else:
d[x] = 1
return d
map = {0:1, 1:1, 2:3, 3:1, 4:2}
count(map, [1,1,0,4])
{1: 3, 2: 1}
for x in count(map, [1,1,0,4]).items():
... print 'type%d: %d' %x
...
type1: 3
type2: 1
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Re: how can I avoid abusing lists?
Thomas Nelson wrote:
I have this code:
type1 = [0]
type2 = [0]
type3 = [0]
map = {0:type1, 1:type1, 2:type3, 3:type1, 4:type2}
Warning : you're shadowing the builtin map() function.
# the real map is
longer than this
def increment(value):
map[value][0] += 1
increment(1)
increment(1)
increment(0)
increment(4)
#increment will actually be called many times through other functions
print type1[0], type2[0], type3[0]
#should print 3 1 0
This is exactly what I want to do: every time I encounter this kind of
value in my code, increment the appropriate type by one. Then I'd like
to go back and find out how many of each type there were. This way
I've written seems simple enough and effective, but it's very ugly and
I don't think it's the intended use of lists.
Not really.
Does anyone know a
cleaner way to have the same funtionality?
# first replace the list hack
class Counter(object):
def __init__(self, name, *keys):
self.name = name
self.keys = keys
self.count = 0
def inc(self):
self.count += 1
# now wrap the whole thing in a convenient way
class Counters(object):
def __init__(self, *counters):
self._counters = dict()
self._counters_map = dict()
for counter in counters:
assert counter.name not in self._counters
self._counters[counter.name] = counter
for key in counter.keys:
assert key not in self._counters_map
self._counters_map[key] = counter
def __getattr__(self, name):
return self._counters[name].count
def __getitem__(self, key):
return self._counters_map[key].count
def __call__(self, key):
self._counters_map[key].inc()
# and finally, let's use it:
increment = Counters(Counter(type1, 0, 1, 3),
Counter(type2, 4),
Counter(type3, 2)
)
increment(1)
increment(1)
increment(0)
increment(4)
print increment.type1, increment.type2, increment.type3
HTH
--
bruno desthuilliers
python -c print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in '[EMAIL PROTECTED]'.split('@')])
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Re: eval to dict problems NEWB going crazy !
Ant wrote: It seems that there must be a way to use eval safely, as there are plenty of apps that embed python as a scripting language - and what's the point of an eval function if impossible to use safely, and you have to write your own Python parser!! embedding python != accepting scripts from anywhere. /F -- http://mail.python.org/mailman/listinfo/python-list
Re: how can I avoid abusing lists?
Thomas Nelson wrote:
I have this code:
type1 = [0]
type2 = [0]
type3 = [0]
map = {0:type1, 1:type1, 2:type3, 3:type1, 4:type2} # the real map is
longer than this
def increment(value):
map[value][0] += 1
increment(1)
increment(1)
increment(0)
increment(4)
#increment will actually be called many times through other functions
print type1[0], type2[0], type3[0]
#should print 3 1 0
This is exactly what I want to do: every time I encounter this kind of
value in my code, increment the appropriate type by one. Then I'd like
to go back and find out how many of each type there were. This way
I've written seems simple enough and effective, but it's very ugly and
I don't think it's the intended use of lists. Does anyone know a
cleaner way to have the same funtionality?
I usually do this:
histogram = {}
for i in range(1,7):
for j in range(1,7):
s = i + j
if histogram.has_key(s):
histogram[s] += 1
else:
histogram[s] = 1
for i in histogram:
print i,histogram[i]
2 1
3 2
4 3
5 4
6 5
7 6
8 5
9 4
10 3
11 2
12 1
Note that only results actually encountered create dictionary
entries, so there is no result for index 0 or 1.
Thanks,
THN
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pyXLWriter - grid lines and if formula
Hi, I know that pyExelerator is the supported project now, but I can't use it because I'd need it to generate files from a web platform. Since I can not save a file to a file-like object, I have to use pyXLWriter. The problems are: 1- how to turn off/on the grid lines of each sheet? 2- I tried to build a simple 'if' formula but couldn't. Is it my problem or pyXLWriter's problem? If the former, is it possible to post an example? TIA Luis P. Mendes -- http://mail.python.org/mailman/listinfo/python-list
IRC questions!!
hi... i'm trying to figure out what i have to do to setup mIRC to get the #python channel on IRC!! any pointers. the mIRC docs didn't get me very far. is there an irc.freenode.net that i need to connect to? how do i do it? thanks.. -bruce -- http://mail.python.org/mailman/listinfo/python-list
Re: How can I avoid abusing lists?
[EMAIL PROTECTED] wrote: if histogram.has_key(s): histogram[s] += 1 else: histogram[s] = 1 I wonder if histogram[s] = histogram.get(s, 0) + 1 would be more efficient... Cheers, -- Klaus Alexander Seistrup Copenhagen, Denmark http://ipsum.dk/ -- http://mail.python.org/mailman/listinfo/python-list
Re: eval to dict problems NEWB going crazy !
Steven D'Aprano wrote:
Personally, I would never use eval on any string I didn't write myself. If
I was thinking about evaluating a user-string, I would always write a
function to parse the string and accept only the specific sort of data I
expected. In your case, a quick-and-dirty untested function might be:
for a more robust approach, you can use Python's tokenizer module,
together with the iterator-based approach described here:
http://online.effbot.org/2005_11_01_archive.htm#simple-parser-1
here's a (tested!) variant that handles lists and dictionaries as well:
import cStringIO, tokenize
def sequence(next, token, end):
out = []
token = next()
while token[1] != end:
out.append(atom(next, token))
token = next()
if token[1] == , or token[1] == ::
token = next()
return out
def atom(next, token):
if token[1] == (:
return tuple(sequence(next, token, )))
elif token[1] == [:
return sequence(next, token, ])
elif token[1] == {:
seq = sequence(next, token, })
res = {}
for i in range(0, len(seq), 2):
res[seq[i]] = seq[i+1]
return res
elif token[0] in (tokenize.STRING, tokenize.NUMBER):
return eval(token[1]) # safe use of eval!
raise SyntaxError(malformed expression (%s) % token[1])
def simple_eval(source):
src = cStringIO.StringIO(source).readline
src = tokenize.generate_tokens(src)
src = (token for token in src if token[0] is not tokenize.NL)
res = atom(src.next, src.next())
if src.next()[0] is not tokenize.ENDMARKER:
raise SyntaxError(bogus data after expression)
return res
(now waiting for paul to post the obligatory pyparsing example).
/F
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Re: how can I avoid abusing lists?
Thomas Nelson wrote:
I have this code:
type1 = [0]
type2 = [0]
type3 = [0]
map = {0:type1, 1:type1, 2:type3, 3:type1, 4:type2} # the real map is
longer than this
def increment(value):
map[value][0] += 1
increment(1)
increment(1)
increment(0)
increment(4)
#increment will actually be called many times through other functions
print type1[0], type2[0], type3[0]
#should print 3 1 0
This is exactly what I want to do: every time I encounter this kind of
value in my code, increment the appropriate type by one. Then I'd like
to go back and find out how many of each type there were. This way
I've written seems simple enough and effective, but it's very ugly and
I don't think it's the intended use of lists. Does anyone know a
cleaner way to have the same funtionality?
I don't think your code is ugly. Anyway, here are two more alternatives:
types = [0] * 3
dispatch = [0, 0, 2, 0, 1]
for value in [1, 1, 0, 4]:
... types[dispatch[value]] += 1
...
types
[3, 1, 0]
inflated = [0] * 5
groups = [[0, 1, 3], [4], [2]]
for value in [1, 1, 0, 4]:
... inflated[value] += 1
...
[sum(inflated[i] for i in group) for group in groups]
[3, 1, 0]
Peter
--
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template is calling 2 times
hi,
i am newbie to python so i am trying to learn mod_python as my new
development kit for my small web apps.
i am getting strange result can anybody explain me.
*
index.py
*
from mod_python import apache
from mod_python import psp
from mod_python import util
def index(req, para=None):
tmpl = psp.PSP(req, filename='a.html')
tmpl.run(vars = {'para':para})
tmpl.run()
def show_data(req, name):
index(req, name)
*
*
a.htm
*
!DOCTYPE HTML PUBLIC -//W3C//DTD HTML 4.0 Transitional//EN
HTML
HEAD
/HEAD
BODY
h1%=para%/h1
form method=post action=http://localhost:8080/test/show_data;
input type=text name=name
input type=submit
/form
/BODY
/HTML
*
*
Result
*
None
textbox submitbutton
Mod_python error: PythonHandler mod_python.publisher
Traceback (most recent call last):
File E:\Python24\Lib\site-packages\mod_python\apache.py, line 299, in
HandlerDispatch result = object(req)
File E:\Python24\Lib\site-packages\mod_python\publisher.py, line 213,
in handler published = publish_object(req, object)
File E:\Python24\Lib\site-packages\mod_python\publisher.py, line 412,
in publish_object return Publish_object(req,util.apply_fs_data(object,
req.form, req=req))
File E:\Python24\lib\site-packages\mod_python\util.py, line 439, in
apply_fs_data return object(**args)
File E:\Apache Group\Apache2\htdocs\test\index.py, line 8, in index
tmpl.run()
File E:\Python24\Lib\site-packages\mod_python\psp.py, line 213, in
run exec code in global_scope
File E:\Apache Group\Apache2\htdocs\test\a.html, line 1, in ?
NameError: name 'para' is not defined
what's wrong in this code?
any good internet resource to learn mod_python?
thanks in advanced
Sanjeev
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Re: IRC questions!!
bruce wrote: hi... i'm trying to figure out what i have to do to setup mIRC to get the #python channel on IRC!! any pointers. the mIRC docs didn't get me very far. is there an irc.freenode.net that i need to connect to? how do i do it? thanks.. -bruce Assuming you're familiar with the basics of IRC. In mIRC, File-Select Server-Add, enter Freenode as description, enter irc.freenode.net as server. Leave the port as 6667, then change it later if server supports other ports. Click connect to server. Cheers, Jon. -- http://mail.python.org/mailman/listinfo/python-list
Re: Error type for shelve.open()
Yes, the problem was that I hadn't imported anydbm.error... it's working now. As for the AttributeError at the end, I talked to someone else, and he looked at the source and said it was a bug in shelve. I think I will report it to python.org. Anyway, thanks :). Simon Forman wrote: [EMAIL PROTECTED] wrote: I tried what you said and it looked like maybe AttributeError, but that didn't work either. This code snippet: import shelve from traceback import format_exc try: db = shelve.open(meh, r) except: print format_exc() Gave me this output: Traceback (most recent call last): File test.py, line 5, in ? db = shelve.open(meh, r) File /usr/lib/python2.4/shelve.py, line 231, in open return DbfilenameShelf(filename, flag, protocol, writeback, binary) File /usr/lib/python2.4/shelve.py, line 212, in __init__ Shelf.__init__(self, anydbm.open(filename, flag), protocol, writeback, binary) File /usr/lib/python2.4/anydbm.py, line 77, in open raise error, need 'c' or 'n' flag to open new db error: need 'c' or 'n' flag to open new db Exception exceptions.AttributeError: DbfilenameShelf instance has no attribute 'writeback' in ignored Do you know what the error is? No. If you tried catching AttributeError and it didn't work then I'd guess that the AttributeError is a secondary result of the initial error. This part of the traceback, File /usr/lib/python2.4/anydbm.py, line 77, in open raise error, need 'c' or 'n' flag to open new db error: need 'c' or 'n' flag to open new db indicates that some sort of custom error, probably defined in the anydbm.py module. Catching the execption and binding it to a var, try: ... db = shelve.open(meh, r) ... except Exception, err: ... E = err ... Exception exceptions.AttributeError: DbfilenameShelf instance has no attribute 'writeback' in ignored E anydbm.error instance at 0xb7d8270c So: from anydbm import error try: ... db = shelve.open(meh, r) ... except error: ... print 'Aha! got it!' ... Aha! got it! Exception exceptions.AttributeError: DbfilenameShelf instance has no attribute 'writeback' in ignored Well, that catches the error, but I don't know what's going on with the additional AttributeError or what to do about it. Peace, ~Simon -- http://mail.python.org/mailman/listinfo/python-list
Re: pyXLWriter - grid lines and if formula
On 7/7/06, Luis P. Mendes [EMAIL PROTECTED] wrote: Hi, I know that pyExelerator is the supported project now, but I can't use it because I'd need it to generate files from a web platform. Since I can not save a file to a file-like object, I have to use pyXLWriter. I don't really know what I'm talking about, but maybe have a Python script that uses pyExelerator and saves the file to Sdout, name that script with an .xls extension and the browser will present it to the user as an Excel file? Maybe, maybe?? -Greg pinero -- http://mail.python.org/mailman/listinfo/python-list
Re: Amara: Where's my attribute?
AdSR wrote:
[EMAIL PROTECTED] wrote:
What is the actual problem you're trying to solve? If you just want to
force a namespace declaration in output (this is sually to support
QNames in content) the most well-known XML hack is to create a dummy
attribute with the needed prefix and namespace. But this does not work
when you're trying to force a default namespace declaration. Then
again, you generally can't use QNames in content with a default
namespace declaration. So my guess is that you somehow got way off the
rails in your problem-solving, and you'll need to provide mre
background if you want help.
I wanted to remove documentation elements from some XML Schema files.
The problem showed when I tried to use the stripped schemas, because
the namespace declaration for user-defined types was missing. Of
course, since these types are named and referred to in attribute
*values*, Amara had no way to know that the namespace declaration was
still needed (didn't matter if default or non-default). This is more a
problem of how XML Schema is defined against XML namespace rules, since
XML Schena uses namespaces in a context of which XML parsers aren't
normally aware.
Yeah. Just so you know. This is one of those things about XML that
make sane people want to dye their eyeballs red.
Unfortunately there isn't much recourse but to switch to namespace
qualified form for your QNames and adding dummy attributes so the
namespace is recognized. Let me know if you need an example.
BTW, I recommend upgrading to Amara 1.1.7. That branch will soon be
1.2, and I consider it more mature than 1.0 at this point. The API's
also easier:
I know, especially the insert-before/after feature :) But I ran into a
problem that I describe below and you advertised 1.0 as stable
version, so I switched immediately.
The problem can be reproduced like this:
import amara
amara.parse('http://www.w3.org/2001/XMLSchema.xsd')
START DTD xs:schema -//W3C//DTD XMLSCHEMA 200102//EN XMLSchema.dtd
http://www.w3.org/2001/datatypes.dtd:99:23: Attribute 'id' already
declared
http://www.w3.org/2001/datatypes.dtd:122:23: Attribute 'id' already
declared
http://www.w3.org/2001/datatypes.dtd:130:27: Attribute 'id' already
declared
...some 40 more lines like this and then Python crashes (Windows shows
the bug-reporting dialog)
I don't get a crash on my system (Ubuntu), but I do get a legitimate
error message because that DTD is broken. The W3C seems to like
disseminating broken DTDs. Just yesterday I was helping someone around
the infamous broken XHTML 1.1 DTDs.
I do want to know why you're gettign a crash rather than just the error
message. What version of Python is that? Any chance you can try with
current CVS Amara (you can use easy_install)? This part of the
discussion should perhaps move to the 4Suite mailing list. I only
check this NG once a week.
--
Uche Ogbuji Fourthought, Inc.
http://uche.ogbuji.nethttp://fourthought.com
http://copia.ogbuji.net http://4Suite.org
Articles: http://uche.ogbuji.net/tech/publications/
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Parsing HTML--looking for info/comparison of HTMLParser vs. htmllib modules.
I'm writing a program that will parse HTML and (mostly) convert it to MediaWiki format. The two Python modules I'm aware of to do this are HTMLParser and htmllib. However, I'm currently experiencing either real or conceptual difficulty with both, and was wondering if I could get some advice. The problem I'm having with HTMLParser is simple; I don't seem to be getting the actual text in the HTML document. I've implemented the do_data method of HTMLParser.HTMLParser in my HTMLParser subclass, but it never seems to receive any data. Is there another way to access the text chunks as they come along? HTMLParser would probably be the way to go if I can figure this out. It seems much simpler than htmllib, and satisfies my requirements. htmllib will write out the text data (using the AbstractFormatter and AbstractWriter), but my problem here is conceptual. I simply don't understand why all of these different levels of abstractness are necessary, nor how to use them. As an example, the html itext/i should be converted to ''text'' (double single-quotes at each end) in my mediawiki markup output. This would obviously be easy to achieve if I simply had an html parse that called a method for each start tag, text chunk, and end tag. But htmllib calls the tag functions in HTMLParser, and then does more things with both a formatter and a writer. To me, both seem unnecessarily complex (though I suppose I can see the benefits of a writer before generators gave the opportunity to simply yield chunks of output to be processed by external code.) In any case, I don't really have a good idea of what I should do with htmllib to get my converted tags, and then content, and then closing converted tags, written out. Please feel free to point to examples, code, etc. Probably the simplest solution would be a way to process text content in HTMLParser.HTMLParser. Thanks, Ken -- http://mail.python.org/mailman/listinfo/python-list
Idea/request for new python mailing list/newsgroup.
Would a mailing list and newsgroup for python contributions be of interest? I currently have a module which is built on top of, and is intended to semantically replace, the 're' module. I use it constantly to great advantage, but have not made it public for the following reasons: * The API should probably be cleaned up in places. * Documentation is reasonable, but should be more organized and put into D'Oxygen format. It also needs to be slightly updated. * A few more unit tests should be added. * A few features of regular expressions are not yet available. * Some capabilities go well beyond those of the re module, and there is the potential for much more. I'd very much likes a ML/newsgroup wherein potential python contributors could * Post alphas/betas and seek feedback. * Request volunteer help to finish a project. * Discuss details of implementation (API, useful vs. nonuseful functionality, etc.) * etc. etc. etc. For example, my library is extremely useful as is, but I currently don't have much time to do the things (API cleanup, doc organization, potential additional features) that I'd like to see before a public release. I also don't have the time or knowledge to set it up as an online project. On the other hand, I'd certainly be willing to share my experiences and knowledge of the current codebase. An appropriate mailing list or newsgroup could give feedback for when I do have time and, if my library is interesting enough, possibly even provide some help. One thing to emphasize is that this should not be a list/newsgroup where people post requests or ideas. Requests or ideas for additional functionality are a dime a dozen. The sole intent of this group would be to provide a forum for discussion and coordination for work which is well under way, but needs input or further help. Cheers, Ken -- http://mail.python.org/mailman/listinfo/python-list
Re: import
Indeed you are correct...that is indeed TWO underscores and everything works fine now. Thanks for pointing out the obvious...I thought it was a simple problem. --DJ faulkner [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] that should be __init__.py [TWO underscores]. and you might want to import sys and check sys.path [the list of directories searched by the import mechanism]. David Jackson wrote: Hi all, I'm a real beginner with python but have what I think is a simple question. I am writing some simple modules and would like to place them into a subdirectory. But then I cannot seem to import them. I have tried the following. I wrote a module called fibo.py with some definitions in it (one called fibo). In the same directory, I wrote another file (test.py) and began with import fibo. This worked fine and I was able to use the function fibo as fibo.fibo. Then, I made a directory called test and placed the file fibo.py in this directory. I also placed a blank file called _init_.py into this directory. I went back to the original directory and tried to import test.fibo but this fails. I get the following error message: Traceback (innermost last) File ...test.py, line 1, in ? import test.fibo File ...test.py, line 1, in ? import test.fibo ImportError: No module named fibo Any help would be greatly appreciated. If it makes any difference, I'm working on a Mac, OSX 10.3.9 Thanks, David -- http://mail.python.org/mailman/listinfo/python-list
Re: how can I avoid abusing lists?
In article [EMAIL PROTECTED], Thomas Nelson wrote:
This is exactly what I want to do: every time I encounter this kind of
value in my code, increment the appropriate type by one. Then I'd like
to go back and find out how many of each type there were. This way
I've written seems simple enough and effective, but it's very ugly and
I don't think it's the intended use of lists. Does anyone know a
cleaner way to have the same funtionality?
How about this:
map = {}
def increment(value):
map[value] = map.get(value, 0) + 1
?
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Re: Idea/request for new python mailing list/newsgroup.
Kenneth McDonald wrote: Would a mailing list and newsgroup for python contributions be of interest? I currently have a module which is built on top of, and is ... I'd very much likes a ML/newsgroup wherein potential python contributors could * Post alphas/betas and seek feedback. * Request volunteer help to finish a project. * Discuss details of implementation (API, useful vs. nonuseful functionality, etc.) * etc. etc. etc. Why is this (c.l.p) not that newsgroup? -- http://mail.python.org/mailman/listinfo/python-list
Re: multinormal distribution
TG wrote: hi there. I'm struggling with a function of numpy. Here it is : import numpy as NP mean = NP.array([0,0]) cov = NP.array([[1,0.25],[0.25,1]]) v = NP.random.multivariate_normal(mean,cov) Quite simple code : it is supposed to generate an array of two random values taken from a multinormal distribution, with respect to means and covariance matrix given as parameters. What happens on my computer is simple : it freezes ! I can't even stop the process with ctrl-C in my python interpreter i have to kill it from outside. I'm running : - python 2.4.1 - numpy 0.9.8 Well, it's working quite well for me on OS X PPC and Linux AMD-64 with a reasonably recent SVN checkout of numpy. Did you build numpy yourself, or use a binary distribution? Windows? Linux? OS X? Please join us on the numpy mailing list with this information; hopefully there is someone there with a similar platform who can replicate your bug or offer better advice than myself. http://www.scipy.org/Mailing_Lists In the meantime, you might try compiling a recent SVN checkout of numpy and see if the problem goes away for you. -- Robert Kern I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth. -- Umberto Eco -- http://mail.python.org/mailman/listinfo/python-list
Re: how can I avoid abusing lists?
Tim Chase wrote: You'll notice that the OP's code had multiple references to the same counter (0, 1, and 3 all mapped to type1) The OP's method was about as good as it gets. One might try to D'oh! Didn't notice that. Yeah, Thomas, if you really do want more than type code (i.e. key to your map dict) to map to the same type counter then IMHO your original method is very apt. Peace, ~Simon -- http://mail.python.org/mailman/listinfo/python-list
RE: IRC questions!!
given that nothing appears to be connecting.. should i have anything in the group window/dialog of the server setting... -bruce -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Jon Clements Sent: Friday, July 07, 2006 10:57 AM To: python-list@python.org Subject: Re: IRC questions!! bruce wrote: hi... i'm trying to figure out what i have to do to setup mIRC to get the #python channel on IRC!! any pointers. the mIRC docs didn't get me very far. is there an irc.freenode.net that i need to connect to? how do i do it? thanks.. -bruce Assuming you're familiar with the basics of IRC. In mIRC, File-Select Server-Add, enter Freenode as description, enter irc.freenode.net as server. Leave the port as 6667, then change it later if server supports other ports. Click connect to server. Cheers, Jon. -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: Looking for a high performance web server written in Python, and supports CGI/FastCGI
Jack wrote: I wrote the last posting at late late night and I didn't know what I was typing at that time ;-p I didn't mean the test with CherryPy was not concurrent connections, or the test with lighttpd was all concurrent connections. I actually tried both concurrent (-c in ab command line) and non-concurrent (without -c in ab command line) and I tried the threading and threadpooling in CherryPy. The result did not vary much. This article http://www.cherrypy.org/wiki/CherryPySpeed says CherryPy can process around 400-500 requests/second. It's set up is: Pentium M 1.6, 1G RAM, Windows XP2 laptop, test done with apache 2.0.41 ab. I have a slightly better hardware set up: Pentium M 1.7MHz, 1.5G RAM on Windows XP2 laptop, test done with Apache 2.2 ab However, I don't get even close. The best I get is around 140 requests/second. I'm using the same test script as the CherryPy test with slight modification just to make it run. As a matter of fact, the Cygwin build of lighttpd only gets around 430 requests/second for a 2-byte static file. I disabled firewall and antivirus on the box when tests were done. Any idea about the huge difference? It would be very interesting if some CherryPy (or python) users can post their performance benchmarks. It would be good to know which version of CherryPy you are using. That wiki page is talking about the CP 2.0 branch; 2.1 and later are quite different. If you have a later version, try using cherrypy/test/benchmark.py Note also that you can use lighttpd as an HTTP server for CherryPy apps via FCGI/SCGI. Robert Brewer System Architect Amor Ministries [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: Looking for a high performance web server written in Python, and supports CGI/FastCGI
I will have to install lighttpd or other web servers. If it is a Python web server, it would be nice to extend it by putting code right into the web server. The performance should be better than FastCGI because it removes the cost to send the requests/replies back and forth. you'll need to make a distinction between a webserver written in python (primary purpose to serve data) and a web framework that integrates python and allows you to generate said data with python as for the so called load test that you mention above, those tests are pointless and provide no insight whatsoever to the realistic behavior of the server ... unless of course all your users are expected to connect from the same machine while asking for the same 2 byte file at the maximum speed the system allows them to. -- http://mail.python.org/mailman/listinfo/python-list
Re: how can I avoid abusing lists?
Thanks to everyone who posted. First, I don't think my question was clear enough: Rob Cowie, Ant, Simon Forman, [EMAIL PROTECTED], and Jon Ribbens offered solutions that don't quite work as-is, because I need multiple values to map to a single type. Tim Chase and Bruno Destuilliers both offer very nice OOP solutions, and I think this is the route I will probably go. However, for the simplest and easiest solution, I really like this from Peter Otten: inflated = [0]*5 groups = [[0,1,3],[4],[2]] for value in [1,1,0,4]: inflated[value] += 1 print [sum(inflated[i] for i in group) for group in groups] 4 lines (one more to assign the lists to name values, but that's minor), and intuitive. If I had just thought of this to begin with, I wouldn't have bothered posting. Thanks to all for the advice. THN -- http://mail.python.org/mailman/listinfo/python-list
Re: Looking for a high performance web server written in Python, and supports CGI/FastCGI
You are right. Load test can be complicated because of the various patterns of web applications and usages. The simple tests I mentioned and conducted just give myself some idea about the performance. Given the same set up, some numbers should be comparable and reveal some aspects on web servers' performance. They are by no means formal load tests, but they are helpful to me :-) Istvan Albert [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] I will have to install lighttpd or other web servers. If it is a Python web server, it would be nice to extend it by putting code right into the web server. The performance should be better than FastCGI because it removes the cost to send the requests/replies back and forth. you'll need to make a distinction between a webserver written in python (primary purpose to serve data) and a web framework that integrates python and allows you to generate said data with python as for the so called load test that you mention above, those tests are pointless and provide no insight whatsoever to the realistic behavior of the server ... unless of course all your users are expected to connect from the same machine while asking for the same 2 byte file at the maximum speed the system allows them to. -- http://mail.python.org/mailman/listinfo/python-list
Re: Nested scopes, and augmented assignment
Antoon Pardon [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] others might be helped if you took the trouble of explaining what was wrong. Aside from F., I tried to explain what I think you said wrong. Did you read it? Did it help any? tjr -- http://mail.python.org/mailman/listinfo/python-list
Re: pyXLWriter - grid lines and if formula
On 8/07/2006 3:43 AM, Luis P. Mendes wrote: Hi, I know that pyExelerator is the supported project now, but I can't use it because I'd need it to generate files from a web platform. Since I can not save a file to a file-like object, I have to use pyXLWriter. The problems are: 1- how to turn off/on the grid lines of each sheet? It is an open source project. When you went to the source directory and typed: grep def.*grid *.py what went wrong? 2- I tried to build a simple 'if' formula but couldn't. What did you try, and what was the result when you opened the file with OO.o Calc / Gnumeric / you-know-what? Have you had success with *any* formulas that have functions with more than one argument? Is it my problem or pyXLWriter's problem? Given the limited information, certainty is impossible, but I'd say it's your problem. If the former, is it possible to post an example? It is possible to post an example irrespective of whether it is your problem or not. It is also possible to go to the examples directory and type: grep -i =if *.py HTH, John -- http://mail.python.org/mailman/listinfo/python-list
[ANNOUNCE] Thirty-third release of PythonCAD now available
Hi. I'm pleased to announce the thirty-third development release of PythonCAD, a CAD package for open-source software users. As the name implies, PythonCAD is written entirely in Python. The goal of this project is to create a fully scriptable drafting program that will match and eventually exceed features found in commercial CAD software. PythonCAD is released under the GNU Public License (GPL). PythonCAD requires Python 2.2 or newer. The interface is GTK 2.0 based, and uses the PyGTK module for interfacing to GTK. The design of PythonCAD is built around the idea of separating the interface from the back end as much as possible. By doing this, it is hoped that both GNOME and KDE interfaces can be added to PythonCAD through usage of the appropriate Python module. Addition of other PythonCAD interfaces will depend on the availability of a Python module for that particular interface and developer interest and action. The thirty-third release contains several major updates to the program. Drawing operations have been greatly sped up when entities are added to a drawing, modified, or deleted from a drawing. Users on older hardware or machines with slower video systems will notice this change immediately. A second large change in this release is the completion of separating the interface code from the core code by using the internal messaging system in place of object inheritance. The third big change in this release is the formatting of the interface text strings for internationalization, and a Spanish translation is now available for users to install. It is hoped that more translations appear in future releases. Additionally, a large number of smaller improvements, enhancements, and bug fixes are also present in this release. A mailing list for the development and use of PythonCAD is available. Visit the following page for information about subscribing and viewing the mailing list archive: http://mail.python.org/mailman/listinfo/pythoncad Visit the PythonCAD web site for more information about what PythonCAD does and aims to be: http://www.pythoncad.org/ Come and join me in developing PythonCAD into a world class drafting program! Art Haas -- Man once surrendering his reason, has no remaining guard against absurdities the most monstrous, and like a ship without rudder, is the sport of every wind. -Thomas Jefferson to James Smith, 1822 -- http://mail.python.org/mailman/listinfo/python-list
Re: how can I avoid abusing lists?
No, your question was clear. With hindsght and a more thorough read of your post I see my error ;^) -- http://mail.python.org/mailman/listinfo/python-list
