Modifying the Python interpreter to create a custom secure version
Hey everyone, I'm embedding the Python interpreter within my program to use as a scripting language. However, one of the unique features of our program is the ability of the internal language to possess per-object security permissions and restricted execution. Therefore, we need to add extra "magic members" (a la __class__, __doc__, and friends) to *all* objects in Python. By editing PyClass_New, we managed to add a test member to all old-style classes. Furthermore, by editing type_new, we managed to achieve the same results for all user- made new-style classes. However! This didn't do anything for built-in types, such as int, object, etc. What are we doing wrong, and does anyone have any recommendations/experience in modifying the built-in interpreter. The source code is clear but a bit daunting when it comes to finding - exactly- where to place code like this. If we're implementing things too far down the type hierarchy, it would be nice to know this beforehand so we don't duplicate any code. Thanks in advance for all your help. Alex, Lucas Comp. Engineering University of Waterloo -- http://mail.python.org/mailman/listinfo/python-list
Re: win32 COM and data types / direction
Alexander Eisenhuth <[EMAIL PROTECTED]> wrote:
>
>Hello everybody,
>
>i wonder how the win32 COM extension handles different C-int types
>(short, int, long).
All of those types are passed on the stack as 32-bit dwords. No problem.
>Another question for me is weather the
>"out-direction" of parameter is supported "out of the box" ?
Yes, but you have to make them outputs from your function. Remember that
assigning to a parameter in Python does not change the parameter from the
caller's point of view:
def FunWithTwoInts( self, inShort, inInt ):
print "got as short:% as int%d" % (inShort, inInt)
return inShort + inInt
If you have multiple OUT parameters, you return a tuple of values.
>To clarify look at the methode "FunWithTwoInts"
>--
>#SimpleCOMServer.py - A sample COM server - almost as small as they come!
>#
># We expose a single method in a Python COM object
>class PythonUtilities:
> _public_methods_ = [ 'FunWithTwoInts' ]
> _reg_progid_ = "PythonDemo.Utilities"
>
> # NEVER copy the following ID!
> # Use "print pythoncom.CreateGuid( )" to make a new one
> _reg_clsid_ = "{40CEA5F8-4D4C-4655-BD8B-0E7B6A26B556}"
>
> def FunWithTwoInts(self, inShort, inInt, outSum):
> print "got as short:%d as int:%d sum:%d" % (inShort, inInt, outSum)
> outSum = inShort + inInt
>
># Add code so that when this script is run by
># Python.exe, it self-registers
>if __name__=='__main_ _':
> print "Registering COM server..."
> import win32com.server.register
> win32com.server.register.UseCommandLine(PythonUtilities)
>--
--
- Tim Roberts, [EMAIL PROTECTED]
Providenza & Boekelheide, Inc.
--
http://mail.python.org/mailman/listinfo/python-list
Re: Setting default option values for Tkinter widgets
yep, that works better under Windows. Pretty obscure use of Python, though! :-) S -- http://mail.python.org/mailman/listinfo/python-list
Tough Spawn Problem
I'm trying to use Python and PyGTK + Glade, along with Bash. I want to make a GUI for the Linux vpnclient command-line tool. (Look for linux-vpnclient.tar.gz on the Internet if you are curious.) Anyway, this vpnclient tool connects to VPN and then stays locked like that while the VPN connection is running. What I was trying to do was either spawn it and then use another command-line tool to check on its status, or shell the process and redirect all its output text to the GTK textbox in the GUI. Here's the problems I found with that: * Spawn - This seems to spawn the process okay, but when the vpnclient connection is finally loaded, it holds the process and the GUI cannot return to being responsive -- it locks the GUI up, essentially. I tried os.NO_WAIT and os.DETACH but os.NO_WAIT was no solution and os.DETACH only works in the documentation, not in my version of Python. * Shell - This seems to do the same thing as spawn but instead of sending output to a console, it sends the output into a console-less space. Then, because the VPN connection is locked-in, it also holds the GUI up and hangs it. I tried using the " &" operator but that seemed to have no effect in fixing this problem. What's the trick? -- http://mail.python.org/mailman/listinfo/python-list
Can a method in one class change an object in another class?
I've got an app that creates an object in its main class (it also creates a GUI). My problem is that I need to pass this object, a list, to a dialog that is implemented as a second class. I want to edit the contents of that list and then pass back the results to the first class. So my question is, can a method in one class change an object in another class? If the answer is no, I suppose I could pass in the list as an argument when I create the second class, then return the contents of the list when I end the methods in that second class. alternatively, I could make the list a global variable, then it would be available to all classes. I have a nagging feeling though that global variables are to be avoided on general principle. Is this correct? Here's a simple example app that tries to have one class change the object in another class. It doesn't give the behaviour I want, though. --- #objtest.py class first: def __init__(self): a = 'a' self.a = a print self.a def update(self): print 'initially, a is', self.a self.a = second(self.a) print 'afterwards, a is', self.a class second: def __init__(self, a): pass def __call__(self, a): a = 'aa' return a if __name__ == '__main__': app = first() app.update() thanks, -- Stewart Midwinter [EMAIL PROTECTED] [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
yum install python2.4
My goal is to install python2.4 using yum (wouldn't you know it, it's a dependency for something else). >From this page (), I followed the following instructions: 1. ...creat "/etc/yum.repos.d/python24.repo" with the following lines: [python24] name=Fedora Core $releasever - $basearch - Python 2.4 baseurl=http://www.python.org/ftp/python/2.4/rpms/fedora-$releasever/ enabled=1 gpgcheck=1 2. Add the KRUD GPG key by running: "rpm --import http://www.python.org/ftp/python/2.4/rpms/KRUD-GPG-KEY"; 3. Install Python 2.4 by running: "yum install python2.4". This is the output I get after running the yum install line: ... Cannot find a package matching python2.4 No actions to take Now, I've checked two things well, the python24.repo file I created is just as it is above, except instead of $releasever, I have 3. This is because my version would otherwise attempt 3AS here. And next, I followed the repository to make sure such a path would have something there. It does: http://www.python.org/ftp/python/2.4/rpms/fedora-3/ So, why the heck doesn't this find python2.4??? These are all the instructions posted on Python's site to install using yum. So, what's wrong? TIA, Richard -- http://mail.python.org/mailman/listinfo/python-list
Modifying Call Tips and Intellisense Behavior
I like the way call tips displays argument variables for functions when
you type the "(" after the function name. However, if one of the
arguments to the function is something like "SomeMod.attribute", the
intellisense will display all the exposed methods and attributes when
"SomeMod." is typed. This is fine but once I have selected the desired
attribute and continue with entering the next argument, the original
call tip for the function I'm working on is lost. I think it would be
nice if one could hit a key sequence or something to recall the last
call tip.
Are there some other python editors that have this type of behavior?
If not, where should I start looking to tweak.
Thanks
--
http://mail.python.org/mailman/listinfo/python-list
Re: os.join Windows action
Michael Hoffman wrote: > Colin J. Williams wrote: > > > C:\XXX is required, C:XXX is not acceptable. > > C:XXX is acceptable, it just means something entirely different from > C:\XXX. There is a current working directory on each drive. C:XXX is > file XXX in the current directory on drive C:. Further notes for Colin: On *x, /xxx is the xxx file in the root directory and xxx is the xxx file in the current directory. Same perceived problem. This is not a new feature in Windows XP; it has been as Michael described ever since directories were introduced in MS-DOS 2.0. And of course it applies to all file paths, irrespective of whether you want to execute / read /write / etc. As a matter of interest, do you normally run python with "site-packages" as the current directory? Most folk would not do that, with any software package, preferring the installed software to be just that, and not "polluted" with their own data etc which should be kept elsewhere in appropriately named and structured directories. HTH, John -- http://mail.python.org/mailman/listinfo/python-list
How do I import everything in a subdir?
Hi.
I have a program which I want a plugin directory for. I figured the way to
go about that would be to just add a plugin/ dir to sys.path, and import
everything in it. Then my program can just execute the main() method of
each imported plugin.
Is that a good way to go about it?
If so, how do I import everything in the plugins dir? The method raises an
error as you can see.
>>> import sys
>>> import os
>>> sys.path.append("plugins")
>>> ls = os.popen("ls plugins").readlines()
>>> for x in ls:
... plugs.append(x[0:x.rfind(".py")])
>>> for x in plugs:
... import x
...
Traceback (most recent call last):
File "", line 2, in ?
ImportError: No module named x
--
http://mail.python.org/mailman/listinfo/python-list
Re: site-packages versus site-python
> Well, broadly, the reason is that it allows version-specific code to be > included in libraries. I've actually found this to be a bit of a pain. I build packages against say, python2.2, and if you upgrade python to 2.3 the package breaks. The code works fine so saying it requires python >= 2.2 should be valid, but the version-specific path prevents that. Mike -- http://mail.python.org/mailman/listinfo/python-list
using python to parse md5sum list
Hi I'm new to programming and i'd like to write a program that will parse a list produced by md5summer and give me a report in a text file on which md5 sums appear more than once and where they are located. the end end goal is to have a way of finding duplicate files that are scattered across a lan of 4 windows computers. I've dabbled with different languages over the years and i think python is a good language for this but i have had a lot of trouble sifting through manual and tutorials finding out with commands i need and their syntax. Can someone please help me? Thanks. Ben -- http://mail.python.org/mailman/listinfo/python-list
Re: using python to parse md5sum list
Among many other things:
First, you might want to look at os.path.walk()
Second, look at the string data type.
Third, get the Python essential reference.
Also, Programming Python (O'Riely) actually has a lot in it about stuff like
this. Its a tedious read, but in the end will help a lot for administrative
stuff like you are doing here.
So, with the understanding that you will look at these references, I will
foolishly save you a little time...
If you are using md5sum, tou can grab the md5 and the filename like such:
myfile = open(filename)
md5sums = []
for aline in myfile.readlines():
md5sums.append(aline[:-1].split(" ",1))
myfile.close()
The md5 sum will be in the 0 element of each tuple in the md5sums list, and
the path to the file will be in the 1 element.
James
On Saturday 05 March 2005 07:54 pm, Ben Rf wrote:
> Hi
>
> I'm new to programming and i'd like to write a program that will parse
> a list produced by md5summer and give me a report in a text file on
> which md5 sums appear more than once and where they are located.
>
> the end end goal is to have a way of finding duplicate files that are
> scattered across a lan of 4 windows computers.
>
> I've dabbled with different languages over the years and i think
> python is a good language for this but i have had a lot of trouble
> sifting through manual and tutorials finding out with commands i need
> and their syntax.
>
> Can someone please help me?
>
> Thanks.
>
> Ben
--
James Stroud, Ph.D.
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095
--
http://mail.python.org/mailman/listinfo/python-list
[ANN] Alternative Readline for Windows -- Binary Installer for Python 2.4 released
This is to announce the release of a binary installer for my Alternative Readline for Windows. This module provides interactive command-line editing for Python on Windows. I realize the console functions of Windows 2000, XP, and 2003 work in the newest Python versions, but it appears that many programmers still work at least part time on Windows 95/98/Me. This module is for them. The source archives and binary installers for Alternative Readline are available for download here: http://newcenturycomputers.net/projects/readline.html -- Chris. -- http://mail.python.org/mailman/listinfo/python-list
multiple inheritance with builtins
Hello, I noticed that bultin types like list, set, dict, tuple don't seem to adhere to the convention of using super() in constructor to correctly allow diamond-shaped inheritance (through MRO). For instance: >>> class A(object): ... def __init__(self): ... print "A.__init__" ... super(A, self).__init__() ... >>> class B(A, list): ... def __init__(self): ... print "B.__init__" ... super(B, self).__init__() ... >>> B.__mro__ (, , , ) >>> B() B.__init__ A.__init__ [] >>> class C(list, A): ... def __init__(self): ... print "C.__init__" ... super(C, self).__init__() ... >>> C.__mro__ (, , , ) >>> C() C.__init__ [] It seems weird to me that I have to swap the order of bases to get the expected behaviour. Is there a reason for this, or is it simply a bug that should be fixed? -- Giovanni Bajo -- http://mail.python.org/mailman/listinfo/python-list
[ANN] WConio 1.5 Binary Installer for Python 2.4
At long last I've upgraded to Python 2.4 on my Windows development host, and as a direct result I have released a WConio 1.5 binary installer for Python 2.4. WConio is my Windows CONsole I/O for Python module. It emulates the conio.h functionality of Turbo C 2.0. This module is based heavily on the TCCONIO package by Daniel Guerrero Miralles, and (like TCCONIO) is in the public domain. WConio may be downloaded from: http://newcenturycomputers.net/projects/wconio.html -- Chris. -- http://mail.python.org/mailman/listinfo/python-list
Re: Impersonating other broswers...
Skip Montanaro <[EMAIL PROTECTED]> wrote
> It doesn't look any easier to do this using urllib2. Seems like a
> semi-obvious oversight for both modules. That suggests few people have
> ever
> desired this capability.
my $.02:
I have trouble believing few people have not desired this for two reasons:
(1) some web sites will shut out user agents they do not recognize to preserve
bandwidth or for other reasons; the right User Agent ID can be required to get
the data one wants;
(2) It seems like it is a worthwhile courtesy to identify oneself when
spidering or data scraping, and the User Agent ID seems like the obvious way to
do that. I'd guess (and like to think) that Python users are generally a little
more concerned with such courtesies than the user population of some other
languages.
e.g. Your website might get a hit from: "Mozilla/5.0 (Songzilla MP3 Blog,
http://songzilla.blogspot.com) Gecko/20041107 Firefox/1.0"
And you'll get to decide whether to shut them out or not, but at least it won't
seem like the black hats are attacking.
Eric Pederson
http://www.songzilla.blogspot.com
:::
domainNot="@something.com"
domainIs=domainNot.replace("s","z")
ePrefix="".join([chr(ord(x)+1) for x in "do"])
mailMeAt=ePrefix+domainIs
:::
--
http://mail.python.org/mailman/listinfo/python-list
Re: locale support and 4.10
Timothy Smith wrote: something strange is happening, no matter what i try nothing is a supported locale and yes it's freebsd 4.10 Sounds like a problem with your operating system. AFAICT, you ought to have a directory /usr/share/locale on your disk. What is its contents? Regards, Martin -- http://mail.python.org/mailman/listinfo/python-list
Re: yield_all needed in Python
> "Paul" == Paul Moore <[EMAIL PROTECTED]> writes: Paul> You can work around the need for something like yield_all, Paul> or explicit loops, by defining an "iflatten" generator, Paul> which yields every element of its (iterable) argument, Paul> unless the element is a generator, in which case we recurse Paul> into it: Paul> ... Only if you'd never want to yield a generator. Regards, Isaac. -- http://mail.python.org/mailman/listinfo/python-list
Re: locale support and 4.10
Martin v. Löwis wrote: Timothy Smith wrote: >>> locale.setlocale(locale.LC_NUMERIC, 'us') the exact same thing works under windows xp. do i have to compile it with locale support? No. You have to choose a locale name that is supported by your operating system (which appears to be FreeBSD). Read your OS documentation for what valid locale names are; most likely, "en_US" or "en_US.ISO-8859-1" are supported. also my second question. once i have this working how do i set the thousands_sep character to be a "," ? You don't directly set it. It is a property of the locale. Regards, Martin something strange is happening, no matter what i try nothing is a supported locale and yes it's freebsd 4.10 -- http://mail.python.org/mailman/listinfo/python-list
Re: Python and VT100
On Sat, 5 Mar 2005 22:10:38 +0100, rumours say that "Dominique Bouré" <[EMAIL PROTECTED]> might have written: >Using Python (Command line version, not IDLE, nor pythonwin) > >With Linux, print "\033[33mHello" prints a brown hello. Fine! >With Windows, the VT100 sequence seems to be unknown? > > >Why? and how can I correct that? > >Thanks > On Sat, 5 Mar 2005 22:10:38 +0100, rumours say that "Dominique Bouré" <[EMAIL PROTECTED]> might have written: >Using Python (Command line version, not IDLE, nor pythonwin) > >With Linux, print "\033[33mHello" prints a brown hello. Fine! >With Windows, the VT100 sequence seems to be unknown? > > >Why? and how can I correct that? (Sigh) "Why?" I don't think there ever was a colour VT100, BICBW. I don't know about colour VT220 either. I once worked with a colour VT320. Linux consoles simulate some "ANSI" terminal similar to the VT's mentioned above for historical reasons. It's a quirk maybe; it's not a mandatory feature for every computer system out there (hint: what was the escape sequence to print a brown hello on a Macintosh with MacOS 9 and earlier?) "and how can I correct that?" Your car does not run on charcoal either, but you don't *correct* that (ie it's not part of the design of the car). There was once an ANSI.SYS (on MS DOorS days, that is :) that you could load in your CONFIG.SYS file and then MS-DOS command line recognized ANSI escape sequences. I don't know if it still exists. And I just checked on this laptop with Windows XP and it exists! (exclamation most sincere). Try googling for directions how to load it. Otherwise, if willing to drop compatibility with escape sequences, you can use WConio: http://newcenturycomputers.net/projects/wconio.html Other related stuff: http://en.wikipedia.org/wiki/Vt100 http://en.wikipedia.org/wiki/Ansi.sys -- TZOTZIOY, I speak England very best. "Be strict when sending and tolerant when receiving." (from RFC1958) I really should keep that in mind when talking with people, actually... -- http://mail.python.org/mailman/listinfo/python-list
Re: Wrong with this script?
"R.Meijer" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Thank you very much for the help and the tips :-) This is my very first
python
> script, and I knew it would have some stupid mistakes; but it's doing
something
> weird right now...I did all the stuff you told, me, and now it'll at least
run.
> But whenI enter a number as a limit, the loop keeps going on forever, nad
the
> numbers won't stop rolling. I'm guessing this is because it sees limit as
a
> string, how can I let it see it as an integer?
My mistake. I was only looking at the last input() call you were using.
For the other one, when you change it to raw_input(), you will get a string
that you must convert to an integer in order to use it for numerical
calculations or comparisons.
int(raw_input('your message here'))
will do this.
After you make this change, try entering a string that cannot be parsed as
an integer, and you will see another exception (ValueError) is raised. In
order to properly handle this, I would wrap the int(raw_input()) in a try:
except: block inside a loop. When you get a valid integer, you can then
"break" out of the loop and continue executing.
You may also want to look at the rest of your script for another place you
can use "break" in order to eliminate a flag.
Happy scripting, and welcome to the bliss that is Python.
Daniel Fackrell
--
http://mail.python.org/mailman/listinfo/python-list
Re: programmatically calling a function
Carl Banks wrote: > Doug Schwarz wrote: > > I don't see how getattr solves the original problem. What, exactly, > is > > the first argument to getattr? > > > mod = __import__(__this__) That should be __import__(__name__) Silly me. -- CARL BANKS -- http://mail.python.org/mailman/listinfo/python-list
Re: Impersonating other broswers...
sboyle> I'm using urlopen, and it works fine. But I'd like to be able
sboyle> to change my browser string from "Python-urllib/1.15" to instead
sboyle> impersonate Internet Explorer.
sboyle> I know this can be done very easily with Perl, so I'm assuming
sboyle> it's also easy in Python. How do I do it?
Easy is in the eye of the beholder I suppose. It doesn't look as
straightforward as I would have thought. You can subclass the
FancyURLopener class like so:
class MSIEURLopener(urllib.FancyURLopener):
version = "Internet Exploder"
then set urllib._urlopener to it:
urllib._urlopener = MSIEURLopener
After that, urllib.urlopen() should spit out your user-agent string.
Seems like FancyURLopener should support setting the user agent string
directly. You can accomplish that with something like this:
class FlexibleUAopener(urllib.FancyURLopener):
def set_user_agent(self, user_agent):
ua = [(hdr, val) for (hdr, val) in self.addheaders
if hdr == "User-agent"]
while ua:
self.addheaders.remove(ua[0])
ua.pop()
self.addheader(("User-agent", user_agent))
You'd then be able to set the user agent, but have to use your new opener
class directly:
opener = FlexibleUAopener(...)
opener.set_user_agent("Internet Exploder")
f = opener.open(url)
print f.read()
It doesn't look any easier to do this using urllib2. Seems like a
semi-obvious oversight for both modules. That suggests few people have ever
desired this capability.
Skip
--
http://mail.python.org/mailman/listinfo/python-list
Re: how to execute Python in VIM
DENG wrote: > ok > > i find it > > map :!d:\python24\python.exe % > > > but it comes with a new pop-up windowsdame~ I'm no windows expert - but maybe pythonw.exe helps here? -- Regards, Diez B. Roggisch -- http://mail.python.org/mailman/listinfo/python-list
Re: Impersonating other broswers...
[EMAIL PROTECTED] wrote: > So I wrote a quick python program (my first ever) that needs to > download pages off the web. > > I'm using urlopen, and it works fine. But I'd like to be able to > change my browser string from "Python-urllib/1.15" to instead > impersonate Internet Explorer. > > I know this can be done very easily with Perl, so I'm assuming it's > also easy in Python. How do I do it? from the urllib docs: ''' class URLopener( [proxies[, **x509]]) Base class for opening and reading URLs. Unless you need to support opening objects using schemes other than http:, ftp:, gopher: or file:, you probably want to use FancyURLopener. By default, the URLopener class sends a User-Agent: header of "urllib/VVV", where VVV is the urllib version number. Applications can define their own User-Agent: header by subclassing URLopener or FancyURLopener and setting the instance attribute version to an appropriate string value before the open() method is called. The optional proxies parameter should be a dictionary mapping scheme names to proxy URLs, where an empty dictionary turns proxies off completely. Its default value is None, in which case environmental proxy settings will be used if present, as discussed in the definition of urlopen(), above. Additional keyword parameters, collected in x509, are used for authentication with the https: scheme. The keywords key_file and cert_file are supported; both are needed to actually retrieve a resource at an https: URL. ''' -- Regards, Diez B. Roggisch -- http://mail.python.org/mailman/listinfo/python-list
Re: how to execute Python in VIM
ok i find it map :!d:\python24\python.exe % but it comes with a new pop-up windowsdame~ -- http://mail.python.org/mailman/listinfo/python-list
Impersonating other broswers...
So I wrote a quick python program (my first ever) that needs to download pages off the web. I'm using urlopen, and it works fine. But I'd like to be able to change my browser string from "Python-urllib/1.15" to instead impersonate Internet Explorer. I know this can be done very easily with Perl, so I'm assuming it's also easy in Python. How do I do it? -- http://mail.python.org/mailman/listinfo/python-list
[ICSEng'05] Final CFP - due date March 10, 2005
We apologize if this is a duplicate email. EIGHTEENTH INTERNATIONAL CONFERENCE ON SYSTEMS ENGINEERING (ICSEng05) LAS VEGAS, USA, AUGUST 16-18, 2005 (http://www.icseng.info) This series of International Conferences is jointly organized on a rotational basis among three institutions, University of Nevada, Las Vegas, USA, Technical University of Wroclaw, Poland, and Coventry University, UK. In August 2005, the 18th International Conference will be held in Las Vegas, NV, at the University of Nevada, Las Vegas, USA. The Proceedings of the conference will be published by IEEE CS. ICSEng05 is organized jointly with the International Conference on Computational Intelligence and Multimedia Applications (ICCIMA'05: www.iccima.org) and the registered participants of ICSEng05 will be able to attend ICCIMA05. Scope of Conference: The Conference will cover the general area of Systems Engineering, with particular emphasis being placed on applications. It is expected to include sessions on the following themes: Avionics Computer Algorithms, Databases, Parallel and Distributed Systems, Networks Digital systems, Architecture Control Theory, System Identification and Adaptive Control, Nonlinear Controls Engineered Systems for Nuclear Waste Management Environmental Systems and Energy Systems Expert Systems and Artificial Intelligence Finance Engineering Geographic Information Systems Global Position Systems Information Theory and Communication Systems Neural Network and Applications Requirements Processes Risk Management Robotics and Industrial Automation Systems Engineering Metrics Systems Engineering Paradigms, Standards and Challenges System Architecture Standards and Testing Signal Processing Systems Engineering Education Transportation Systems Special Tracks: 1. Data Fusion: Data fusion is the concept of comparing, combining, and interpreting data over time and from disparate information sources (sensors, data bases, and knowledge bases) in order to gain a better understanding of ones environment, scenario, and/or situation. The four primary level of data fusion include object refinement, situational assessment, impact assessment, and refinement. The applications of and technologies associated with data fusion are quite varied. Applications include (but are not limited to) target tracking, fault detection and diagnosis, environmental monitoring, control systems, medical systems, robotics, and traffic control. Technologies in the field of data fusion include estimation theory, neural networks, fuzzy logic, control, probability theory, image processing, decision theory, and data mining. Papers are being sought for this special session on data fusion which address advances in fusion technologies and applications of data fusion systems. One page abstracts for the purpose of reviewing are due by March 10, 2004. For more information: http://www.icseng.info/data.htm 2. Risk Management: This track is ideal for program/project managers, project personnel, risk managers, and support personnel wanting to develop and expand knowledge, and share experiences, on best practices in aerospace risk management processes. Presentations by invited speakers, followed by a panel discussion, are provided for track participants. Risk management is a project-wide effort involving management, engineering, production, test, and support personnel. Several customers, including NASA and the DoD, continue to observe that risk management is important to project success and yet lacks rigor in a majority of space activities. This track on Current Trends and Best Practices in aerospace risk management is designed to explore risk management contributions to current and future space programs, including projects from many customer communities (including commercial, NASA, DoD, and ESA among others). Key themes include how practices are applied successfully to programs and organizations, how the risk process influences decision-making and project cost management, and selection of successful tools for quantitative cost and schedule risk analysis. Lessons learned from executing risk management on a wide variety of programs will be presented to illustrate implementation of success-oriented risk processes. One page abstracts for the purpose of reviewing are due by March 10, 2004. For more information: http://www.icseng.info/strm.htm 3. Computer Infrastructure for Systems Biology: The special session's goal is to bring forth ideas and collaborations among industrial and academic bioinformaticians, biocomputing professionals, data analysts, and system biologists to facilitate systems biology research and findings. Both research papers (6 pages, IEEE Proceedings format) and poster papers (2 pages) are solicited to explore case histories of building and maintaining IT infrastructures that support advanced biological research. Both industrial and academic contributions are welcome. Systems Biology is an emerging field that seeks to analyze disparate for
[ICCIMA'05] Final Call for Papers; Due Date March 10, 2005
We apologize if this is a duplicate email. International Conference on Computational Intelligence and Multimedia Applications, (ICCIMA) August 16-18, 2005 University of Nevada, Las Vegas, USA (www.iccima.org) F I N A LC A L L F O R P A P E R S The International Conference on Computational Intelligence and Multimedia Applications will be held at the University of Nevada, Las Vegas, USA on August 16-18, 2005. The conference will provide an international forum for discussion on issues in the areas of Computational Intelligence and Multimedia for scientists, engineers, researchers and practitioners. ICCIMA'05 is organized jointly with International Conference on Systems Engineering (ICSEng'05: www.icseng.info) and the registered participants of ICCIMA'05 will be able to attend ICSEng'05. The conference will include sessions on theory, implementation and applications, as well as the non-technical areas of challenges in education and technology transfer to industry. There will be both oral and poster sessions. Accepted full papers will be included in the proceedings to be published by IEEE CS Press. Selected papers will be published in "International Journal on Computational Intelligence and Applications" published by World Scientific Publishing Company Press. Several well-known keynote speakers will address the conference. Conference Topics Include (but not limited to): Artificial Intelligence, Artificial Neural Networks, Pattern Recognition, Fuzzy Systems, Genetic Algorithms, Hybrid Systems, Intelligent Control, Intelligent Databases, Knowledge-based Engineering, Learning Algorithms, Memory: Storage and Retrieval, Multimedia Systems, Formal Models for Multimedia, Interactive Multimedia, Multimedia and Virtual Reality, Multimedia and Telecommunications, Multimedia Information Retrieval, Multimedia and Security, Multimedia Hardware, Multimedia and Algorithms. Special Poster Session: ICCIMA'05 will include a special poster session devoted to recent work and work-in-progress. Abstracts are solicited for this session (2 page limit) in camera ready form, and may be submitted up to 30 days before the conference date. They will not be refereed and will not be included in the proceedings, but will be distributed to attendees upon arrival. Students are especially encouraged to submit abstracts for this session. Invited Sessions: Keynote speakers (key industrialists, chief research scientists and leading academics) will be addressing the main issues of the conference. Important Dates: Submission of papers received latest on: March 10, 2005 Submission of Papers: Papers in English reporting original and unpublished research results and experience are solicited. Electronic submission of papers via www.iccima.org. Visit the web page for more information. Page Limits: Papers for refereeing should be double-spaced and must include an abstract of 100-150 words with up to six keywords. Selected papers will have a limit of 6 pages in the proceedings to be published by IEEE. Evaluation Process: All submissions will be refereed based on the following criteria by two reviewers with appropriate background: originality significance contribution to the area of research technical quality relevance to ICCIMA 2005 topics clarity of presentation Contact Information: ICCIMA' 05 Secretariat Department of Electrical and Computer Engineering University of Nevada, Las Vegas 4505 Maryland Parkway, Box 454026 Las Vegas, NV 89154-4026 USA Phone: +1 702 895 4184 Fax: +1 702 895 1115 email:[EMAIL PROTECTED] URL: http://www.iccima.org/ ___ Conf mailing list [EMAIL PROTECTED] http://Mail.Egr.UNLV.EDU/mailman/listinfo/conf -- http://mail.python.org/mailman/listinfo/python-list
Re: Equality operator
italy wrote: > Why doesn't this statement execute in Python: > > 1 == not 0 > > I get a syntax error, but I don't know why. > > Thanks, > Adam Roan Of course, you would normally want to use != to see if something is not equal to something else. 1 != 0 True -- http://mail.python.org/mailman/listinfo/python-list
Re: Equality operator
In <[EMAIL PROTECTED]>, italy wrote: > Why doesn't this statement execute in Python: > > 1 == not 0 > > I get a syntax error, but I don't know why. `==` has a higher precedence than `not` so Python interprets it as:: (1 == not) 0 This works:: >>> 1 == (not 0) True Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list
Re: python/linux guru needed.. now!!!!
bruce wrote: > hi... > > i have a situation with a linux rh8 server. i can't seem to get > python/mod_python/apache working as one... > > i can't seem to import mod_python from the python interpreter to work, and > i'm not sure as to why. i'm fairly convinced that it's a conflict issue of > some type, but i'm not sure as to how to resolve it... > > if you are a guru with python/mod_python/linux then i'd like to talk with > you... > > searching through google/mailing lists/etc... is getting me nowhere!! You will do better if you present your problem in the mod_python mailing list. Go to http://www.modpython.org to get the mailing list details, get yourself on the list and then post the following information as a start. Which version of mod_python you are using. Whether you are using the global configuration file or a .htaccess file. The snippet of the Apache configuration you are using to configure mod_python and enable its use in the directory you are working in. Details of any error responses which are being displayed by your web browser. Details of messages, be they notices or error messages, which occur in the Apache error log file corresponding to any request you are making which is not working. The full contents of the Python code file for the content handler you are trying to use. -- http://mail.python.org/mailman/listinfo/python-list
Re: GOTO (was Re: Appeal for python developers)
Dennis Lee Bieber wrote:
On 5 Mar 2005 08:00:23 -0800, [EMAIL PROTECTED] declaimed the following
in comp.lang.python:
"explicit GOTO"'. Goto's are less dangerous when they are in the
forward direction, to code appearing later.
UGH... That is the one direction I always avoid (in FORTRAN 77).
Typical example of forward GOTOs in Python source:
static PyObject *
min_max(PyObject *args, PyObject *kwds, int op)
{
...
while (( item = PyIter_Next(it) )) {
/* get the value from the key function */
if (keyfunc != NULL) {
val = PyObject_CallFunctionObjArgs(
keyfunc, item, NULL);
if (val == NULL)
goto Fail_it_item;
}
...
else {
int cmp = PyObject_RichCompareBool(
val, maxval, op);
if (cmp < 0)
goto Fail_it_item_and_val;
else if (cmp > 0) {
...
}
}
}
if (PyErr_Occurred())
goto Fail_it;
...
return maxitem;
Fail_it_item_and_val:
Py_DECREF(val);
Fail_it_item:
Py_DECREF(item);
Fail_it:
Py_XDECREF(maxval);
Py_XDECREF(maxitem);
Py_DECREF(it);
return NULL;
}
Note that the GOTOs are basically there to take care of the appropriate
decref-ing if exceptions occur.
STeVe
--
http://mail.python.org/mailman/listinfo/python-list
python/linux guru needed.. now!!!!
hi... i have a situation with a linux rh8 server. i can't seem to get python/mod_python/apache working as one... i can't seem to import mod_python from the python interpreter to work, and i'm not sure as to why. i'm fairly convinced that it's a conflict issue of some type, but i'm not sure as to how to resolve it... if you are a guru with python/mod_python/linux then i'd like to talk with you... searching through google/mailing lists/etc... is getting me nowhere!! thanks bruce -- http://mail.python.org/mailman/listinfo/python-list
GUI Guy auto-reply
Thanks for e-mailing GUI Guy. Please note the following: If your e-mail was a request for technical support, it will be ignored. Please use the support forums available online here: http://guiguy.wminds.com/forums/ Due to large amounts of spam and recent increased virus activity, I am no longer accepting mail sent to this e-mail address unless it contains a specific string of text in the subject. If your e-mail is not a request for technical support and you would like me to read it, please re-send it with the following text anywhere in the subject (without the quotes): "--nospam here--" Thanks and sorry for the hassle. Best regards, GUI Guy -- http://mail.python.org/mailman/listinfo/python-list
Re: Accessing Python parse trees
On Sat, 05 Mar 2005 08:52:38 -0500, Kent Johnson <[EMAIL PROTECTED]>
wrote:
>Manlio Perillo wrote:
>> Anyway, here is an example of what I would like to do:
>>
>> #begin
>> def foo(**kwargs): print kwargs
>>
>> foo(a = 1, b = 2, c = 3)
>> #end
>>
>>
>> In the current implementation kwargs is a dict, but I need to have the
>> keyword argument sorted.
>> Unfortunately subclassing fron dict and installing the class in the
>> __builtin__ module (with the name 'dict') does not work, CPython uses
>> only builtin types.
>>
>> With the compiler module I can obtain the keyword arguments in the
>> order the were specified.
>> The problem is how to do this for every call to foo!
>
>Why not just pass the kind of argument you want? What is it you really need to
>do?
>
>def foo(kwds): print kwds
>
>foo(MyDict(a = 1, b = 2, c = 3))
>
>Kent
I don't understand your code.
Here an example using OrderedDict from twisted:
>>> import twisted.python.util as util
>>> foo(util.OrderedDict(a = 1, b = 2, c = 3))
{'a': 1, 'c': 3, 'b': 2}
Simply I can't use a dict.
I have to do, as an example example:
foo('a', 1, 'b', 2, 'c', 3)
or
foo(['a', 'b', 'c'], [1, 2, 3])
Thanks and regards Manlio Perillo
--
http://mail.python.org/mailman/listinfo/python-list
Re: how to execute Python in VIM
i change the path autocmd FileType python setlocal makeprg=\"d:\\Python24\\python.exe\"\ autocmd BufNewFile,BufRead test*.py setlocal makeprg=\"d:\\Python24\\python.exe\"\ % -- http://mail.python.org/mailman/listinfo/python-list
Re: site-packages versus site-python
[EMAIL PROTECTED] wrote: I recently installed python 2.4, and many installed software packages stopped working. Some things got working after I copied some files and directories from /usr/lib/python2.3/site-packages to /usr/lib/python2.4/site-packages, but I also had to install a newer PyXml package, as some of the files that came with python2.4 required a newer version of pyxml than I had in python2.3/site-packages. I wonder if there is any particular reason I have no /usr/lib/site-python directory, and everything is installed in version-specific site-packages. Well, broadly, the reason is that it allows version-specific code to be included in libraries. Of course, Python is so good at maintaining backward compatibility that it's unlikely a pure Python module will fail to run on the next version of Python. But you have to do this for extension modules, where the code is compiled against a specific version of the Python interpreter API, which doesn't stay the same from one version to the next. I have Fedora Core 3. Is it the Fedora packagers who prefer installing everything in the version-specific directory? Is there no way to have older packages continue working in the presence of python2.4? (I still want the newest to be the default!) I have tried (cd /usr/bin; grep '#!.*python' * 2>/dev/null), and very few of the programs have a specific version in the interpreter line. Is there any good reason this is so? Thinking about it, a particular python program may require a particular module, but not any particular version of python or the module. The module perhaps requires at least python2.3, but could run just as well with python2.4 or later. It does not make sense to have the program demand a particular version of python in its interpreter string (e.g., "#!/usr/bin/python2.3"), but what about the module. Would it be better to put the module in site-python and include code to check the interpreter version? Perhaps there is no perfect solution that covers all permutations, but on the other hand, what is currently the "correct philosophy" of version handling? The current "correct" philosophy is to have version-specific libraries. Of course, there is nothing to stop you building your own *no*-version-specific library directory and configuring it on to the PYTHONPATH for each version you run. regards Steve -- Meet the Python developers and your c.l.py favorites March 23-25 Come to PyCon DC 2005 http://www.pycon.org/ Steve Holden http://www.holdenweb.com/ -- http://mail.python.org/mailman/listinfo/python-list
calling a same class using threading python
Hi friends, I am creating a jabber client and a separate class for dialog is created,So when the roster name is clicked this dialog open and can continue chat.What I need is I am calling the same class when reciving the message so that the application goes not responding.People told me to use threading for this. Can any one help me in calling the same dialog class using threading... Thanks in advance -- http://mail.python.org/mailman/listinfo/python-list
how to execute Python in VIM
hi,
im a newbie to VIM(gVIM under WINXP), i want to execute python in vim
like press F5 in SciTE.
i try to search in google and config as follows in my _vimrc:
---
map :D:\python24\python.exe %
if has("autocmd")
autocmd FileType python setlocal et | setlocal sta | setlocal sw=4
autocmd FileType python compiler pyunit
autocmd FileType python setlocal makeprg=python\ ./alltests.py
autocmd BufNewFile,BufRead test*.py setlocal makeprg=python\ %
endif
--
but neither F5 nor MAKE works.
who can help me ?
thanks in advance
--
http://mail.python.org/mailman/listinfo/python-list
Re: Wrong with this script?
R.Meijer wrote:
Hi, I've been busy with an experimental script, and I can't seem to
see what is wrong with it, can somebody tell me?
For future notice, it's useful to
(1) explain what it is you want your script to do, and
(2) explain what it currently does (including an exception traceback if
one is printed)
Using my mind-reading powers, I'd suggest that maybe you want something
like:
py> for limit in iter(lambda: raw_input('What number? '), ''):
... if limit == "help":
... print "The Fibonacci series..."
... else:
... a, b = 0, 1
... limit = int(limit)
... while b < limit:
... print b
... a, b = b, a+b
...
[... I type '6' ...]
1
1
2
3
5
[... I type '13' ...]
1
1
2
3
5
8
[... I type '' (nothing) ...]
py>
STeVe
--
http://mail.python.org/mailman/listinfo/python-list
Python and VT100
Using Python (Command line version, not IDLE, nor pythonwin) With Linux, print "\033[33mHello" prints a brown hello. Fine! With Windows, the VT100 sequence seems to be unknown? Why? and how can I correct that? Thanks -- http://mail.python.org/mailman/listinfo/python-list
Re: Equality operator
"not" has a lower priority than non-Boolean operators, so not a == b is interpreted as not (a == b), and a == not b is a syntax error. http://docs.python.org/lib/boolean.html -- http://mail.python.org/mailman/listinfo/python-list
Re: Equality operator
> Why doesn't this statement execute in Python: > > 1 == not 0 > > I get a syntax error, but I don't know why. This does: 1 == (not 0) I presume Python treats it like 1 (== not) 0 Which is a SyntaxError greets, Marek -- http://mail.python.org/mailman/listinfo/python-list
Re: Wrong with this script?
Daniel Fackrell gmail.com> writes:
>
> You need to close the () for input here. After doing that, if you run it
> you will notice that you get an exception for most inputs, including "yes".
> IIRC, input() is scheduled for removal in some future version of Python
> because it doesn't do what you would expect and it is generally a bad idea
> to use it. The functionality is along the lines of:
>
> eval(raw_input('your string here'))
>
> You undoubtedly want raw_input() instead here.
>
> > if again!="yes":
> > mainloop = 0
>
> This last line needs indented.
>
> And a couple of minor points:
>
> 1. Choose an amount of indentation per level and stick to it. 4 is rather
> common in Python code.
>
> 2. When posting to the list, make sure that the lines in your code are short
> enough that they will not wrap and be posted as broken code. 70 chars is
> usually safe.
>
> Daniel Fackrell
>
Thank you very much for the help and the tips :-) This is my very first python
script, and I knew it would have some stupid mistakes; but it's doing something
weird right now...I did all the stuff you told, me, and now it'll at least run.
But whenI enter a number as a limit, the loop keeps going on forever, nad the
numbers won't stop rolling. I'm guessing this is because it sees limit as a
string, how can I let it see it as an integer?
--
http://mail.python.org/mailman/listinfo/python-list
Re: Equality operator
italy wrote: Why doesn't this statement execute in Python: 1 == not 0 I get a syntax error, but I don't know why. Because == has higher precedence than 'not', so you are asking for (1 == not) 0 Try >>> 1 == (not 0) True Kent Thanks, Adam Roan -- http://mail.python.org/mailman/listinfo/python-list
Equality operator
Why doesn't this statement execute in Python: 1 == not 0 I get a syntax error, but I don't know why. Thanks, Adam Roan -- http://mail.python.org/mailman/listinfo/python-list
Re: Wrong with this script?
"R.Meijer" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Hi, I've been busy with an experimental script, and I can't seem to
> see what is wrong with it, can somebody tell me?
>
> Here it is:
>
> a = 0
> b = 1
> mainloop = 1
>
> print "Welcome to pyFibo"
> print "For more information type \'help\'"
> while mainloop==1:
> limit = input("Until what number do you want to see the
> Fibonacci series?")
> if limit=="help":
> print "The Fibonacci series is a worldfamous series of
> numbers.\
> Each consecutive number is calculated by adding the previous two
> numbers to\
> each other."
> else:
> while b < limit:
> print b
> a, b = b, a+b
> print "Want to do another series?"
> again = input("(Type yes for another series, or anything
> else to quit.)"
You need to close the () for input here. After doing that, if you run it
you will notice that you get an exception for most inputs, including "yes".
IIRC, input() is scheduled for removal in some future version of Python
because it doesn't do what you would expect and it is generally a bad idea
to use it. The functionality is along the lines of:
eval(raw_input('your string here'))
You undoubtedly want raw_input() instead here.
> if again!="yes":
> mainloop = 0
This last line needs indented.
And a couple of minor points:
1. Choose an amount of indentation per level and stick to it. 4 is rather
common in Python code.
2. When posting to the list, make sure that the lines in your code are short
enough that they will not wrap and be posted as broken code. 70 chars is
usually safe.
Daniel Fackrell
--
http://mail.python.org/mailman/listinfo/python-list
Wrong with this script?
Hi, I've been busy with an experimental script, and I can't seem to
see what is wrong with it, can somebody tell me?
Here it is:
a = 0
b = 1
mainloop = 1
print "Welcome to pyFibo"
print "For more information type \'help\'"
while mainloop==1:
limit = input("Until what number do you want to see the
Fibonacci series?")
if limit=="help":
print "The Fibonacci series is a worldfamous series of
numbers.\
Each consecutive number is calculated by adding the previous two
numbers to\
each other."
else:
while b < limit:
print b
a, b = b, a+b
print "Want to do another series?"
again = input("(Type yes for another series, or anything
else to quit.)"
if again!="yes":
mainloop = 0
Any help is appreciated, thanks ^_^
--
http://mail.python.org/mailman/listinfo/python-list
Re: Win32 drive mapping... aka "net use"
b = a.strip(r'\\\x00')
b
> 'A:\\\x00C:\\\x00D:\\\x00E:\\\x00Z:\\\x00'
b = a.split(r'\\\x00')
b
> ['A:\\\x00C:\\\x00D:\\\x00E:\\\x00Z:\\\x00']
>
> I'm a bit of a novice at python (even more so of the win32 api), but
> I've used the split and strip functions before (for example to get rid
> of '\n' from strings) so it is unclear to me why this does not work.
The string you get ist actually a list of null-terminated strings. And the
byte 0 that you want to have as delimiter for splitting is written
'\x00'
So do this:
b = a.split('\x00')
Read the python docs about strings and raw strings and escaping of
characters to understand the subtle details here.
--
Regards,
Diez B. Roggisch
--
http://mail.python.org/mailman/listinfo/python-list
Re: Win32 drive mapping... aka "net use"
The split should work fine if you remove the r
(raw string) prefix.
>>> win32api.GetLogicalDriveStrings().split('\\\x00')
['A:', 'C:', 'D:', 'E:', 'F:', 'G:', 'H:', 'J:', 'K:', 'Y:', 'Z:', '']
Roger
"Lucas Machado" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Roger Upole wrote:
>> You could use win32api.GetLogicalDriveStrings to list
>> the drive letters currently in use, and find the next free
>> letter. net use * probably does something like that under
>> the covers.
>
> I went and took your advice and this is where I am now:
>
import win32api
a = win32api.GetLogicalDriveStrings()
a
> 'A:\\\x00C:\\\x00D:\\\x00E:\\\x00Z:\\\x00'
print a
> A:\ C:\ D:\ E:\ Z:\
>
> So I think this function will work great since it gives me a string
> that i can simply strip away what i don't need and then split it into a
> list and traverse the list. However, when I try to split it, the
> following occurs:
>
b = a.strip(r'\\\x00')
b
> 'A:\\\x00C:\\\x00D:\\\x00E:\\\x00Z:\\\x00'
b = a.split(r'\\\x00')
b
> ['A:\\\x00C:\\\x00D:\\\x00E:\\\x00Z:\\\x00']
>
> I'm a bit of a novice at python (even more so of the win32 api), but
> I've used the split and strip functions before (for example to get rid
> of '\n' from strings) so it is unclear to me why this does not work.
>
> Thanks
> --LM
>
== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+
Newsgroups
= East and West-Coast Server Farms - Total Privacy via Encryption =
--
http://mail.python.org/mailman/listinfo/python-list
Re: GOTO (was Re: Appeal for python developers)
[EMAIL PROTECTED] wrote:
Goto is useful [...] when there is a clean-up section of a function
that should be executed for various error conditions.
Like this?
def foo():
f = open('foo.txt')
try:
# do stuff with f
finally:
f.close()
--
http://mail.python.org/mailman/listinfo/python-list
Re: Win32 drive mapping... aka "net use"
Roger Upole wrote: > You could use win32api.GetLogicalDriveStrings to list > the drive letters currently in use, and find the next free > letter. net use * probably does something like that under > the covers. I went and took your advice and this is where I am now: >>> import win32api >>> a = win32api.GetLogicalDriveStrings() >>> a 'A:\\\x00C:\\\x00D:\\\x00E:\\\x00Z:\\\x00' >>> print a A:\ C:\ D:\ E:\ Z:\ So I think this function will work great since it gives me a string that i can simply strip away what i don't need and then split it into a list and traverse the list. However, when I try to split it, the following occurs: >>> b = a.strip(r'\\\x00') >>> b 'A:\\\x00C:\\\x00D:\\\x00E:\\\x00Z:\\\x00' >>> b = a.split(r'\\\x00') >>> b ['A:\\\x00C:\\\x00D:\\\x00E:\\\x00Z:\\\x00'] I'm a bit of a novice at python (even more so of the win32 api), but I've used the split and strip functions before (for example to get rid of '\n' from strings) so it is unclear to me why this does not work. Thanks --LM -- http://mail.python.org/mailman/listinfo/python-list
Re: handling pywintypes.error exceptions
You can capture the extra exception data like this.
try:
...win32net.NetUseAdd(None, 1, {'remote':r'\\foo\bar','local':'X
except pywintypes.error,details:
...err_code=details[0]
...
Roger
"Lucas Machado" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> I'm using the win32 api to map samba shares, and I'm having trouble
> handling some exceptions. In my script there are 2 possible exceptions
> when the script attempts to map a share:
>
win32net.NetUseAdd(None, 1, {'remote':r'\\foo\bar','local':'X
> Traceback (most recent call last):
> File "", line 1, in ?
> pywintypes.error: (53, 'NetUseAdd', 'The network path was not found.')
>
> This exception occurs when '\\foo\bar' is not an existing share. Also,
> when a drive letter is already in use the following occurs:
>
win32net.NetUseAdd(None, 1,
> {'remote':r'\\some_server\share','local':'Y:'})
> Traceback (most recent call last):
> File "", line 1, in ?
> pywintypes.error: (85, 'NetUseAdd', 'The local device name is already
> in use.')
>
> I know the exception raised in these cases is "pywintypes.error", but
> how can i differentiate between the two exceptions? Being able to do
> this is critical for my script
>
> Thanks in advance,
> --Lucas Machado
>
== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+
Newsgroups
= East and West-Coast Server Farms - Total Privacy via Encryption =
--
http://mail.python.org/mailman/listinfo/python-list
Re: GOTO (was Re: Appeal for python developers)
At the risk of beating this into the Pythonic ground, here is a generator version which collapses the original nested loop into a single loop, so that break works just fine: .def getCombinations(*args): .if len(args) > 1: .for a0 in args[0]: .for remainder in getCombinations(*args[1:]): .yield [a0]+remainder .else: .for a0 in args[0]: .yield [a0] . .for i,j,k in getCombinations(xrange,yrange,zrange): .if lookup(i,j,k) == target: .print "Eureka!" .break .else: .print "Rats! No match found." Now that we have getCombinations in our toolkit, we can also do things like: .numbers = range(2) .colors = ['red','green','blue','orange','white'] .sizes = ['S','M','L','XL','XXL'] .letters = "ABCDE" .print [ c for c in getCombinations(numbers, colors) ] .print [ c for c in getCombinations(numbers, colors, sizes) ] .print [ c for c in getCombinations(letters,colors) ] .print [ c for c in getCombinations(letters,letters) ] # take letters two at a time .print [ "".join(c) for c in getCombinations(letters,letters) ] giving: [[0, 'red'], [0, 'green'], [0, 'blue'], [0, 'orange'], [0, 'white'], [1, 'red'], [1, 'green'], [1, 'blue'], [1, 'orange'], [1, 'white']] [[0, 'red', 'S'], [0, 'red', 'M'], [0, 'red', 'L'], [0, 'red', 'XL'], [0, 'red', 'XXL'], [0, 'green', 'S'], [0, 'green', 'M'], [0, 'green', 'L'], [0, 'green', 'XL'], [0, 'green', 'XXL'], [0, 'blue', 'S'], [0, 'blue', 'M'], [0, 'blue', 'L'], [0, 'blue', 'XL'], [0, 'blue', 'XXL'], [0, 'orange', 'S'], [0, 'orange', 'M'], [0, 'orange', 'L'], [0, 'orange', 'XL'], [0, 'orange', 'XXL'], [0, 'white', 'S'], [0, 'white', 'M'], [0, 'white', 'L'], [0, 'white', 'XL'], [0, 'white', 'XXL'], [1, 'red', 'S'], [1, 'red', 'M'], [1, 'red', 'L'], [1, 'red', 'XL'], [1, 'red', 'XXL'], [1, 'green', 'S'], [1, 'green', 'M'], [1, 'green', 'L'], [1, 'green', 'XL'], [1, 'green', 'XXL'], [1, 'blue', 'S'], [1, 'blue', 'M'], [1, 'blue', 'L'], [1, 'blue', 'XL'], [1, 'blue', 'XXL'], [1, 'orange', 'S'], [1, 'orange', 'M'], [1, 'orange', 'L'], [1, 'orange', 'XL'], [1, 'orange', 'XXL'], [1, 'white', 'S'], [1, 'white', 'M'], [1, 'white', 'L'], [1, 'white', 'XL'], [1, 'white', 'XXL']] [['A', 'red'], ['A', 'green'], ['A', 'blue'], ['A', 'orange'], ['A', 'white'], ['B', 'red'], ['B', 'green'], ['B', 'blue'], ['B', 'orange'], ['B', 'white'], ['C', 'red'], ['C', 'green'], ['C', 'blue'], ['C', 'orange'], ['C', 'white']] [['A', 'A'], ['A', 'B'], ['A', 'C'], ['B', 'A'], ['B', 'B'], ['B', 'C'], ['C', 'A'], ['C', 'B'], ['C', 'C']] ['AA', 'AB', 'AC', 'BA', 'BB', 'BC', 'CA', 'CB', 'CC'] Finally, these last two examples make me think of permutations as well (in which order is significant - can't count both AB and BA). So here is a brute force version of getPermutations, built on getCombinations, but filtering previously reported duplicates: .from sets import Set as set .def getPermutations(*args): .prevs = [] .for comb in getCombinations(*args): .thisComb = set(comb) .if not thisComb in prevs: .prevs.append(thisComb) .yield comb . .print [ c for c in getPermutations(letters,letters) ] .print [ "".join(c) for c in getPermutations(letters,letters) ] gives: [['A', 'A'], ['A', 'B'], ['A', 'C'], ['B', 'B'], ['B', 'C'], ['C', 'C']] ['AA', 'AB', 'AC', 'BB', 'BC', 'CC'] -- Paul -- http://mail.python.org/mailman/listinfo/python-list
Re: Win32 drive mapping... aka "net use"
You could use win32api.GetLogicalDriveStrings to list
the drive letters currently in use, and find the next free
letter. net use * probably does something like that under
the covers.
hth
Roger
"Lucas Machado" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
>
> Alex Martelli wrote:
>
>> import win32net
>> win32net.NetUseAdd(None,1,{'remote':r'\\server\share','local':'K:'})
>>
>> is an example (not all that easy to fathom from the docs, but I
>> found it out with a little help from the docs, a little from MSDN,
>> and a little experimentation).
>
> I looked through the MSDN and was not able to find much information on
> how to properly use the NetUseAdd function. I searched for the
> function and looked through the results but all it showed was some data
> structure, but i was actually looking for a list of all possible
> arguments and which arguments were/were not required.
>
> my problem with the above NetUseAdd example is that I would rather not
> have to specify a device. In the script I am writing the user may
> choose to map multiple shares so I need to be able to map to the next
> available device:
>
> net use * \\some_server\share_name
>
> instead of:
>
> net use k: \\server\share
>
> Thanks for the help in advance. Also, if anyone could provide a link
> to good windows api docs for python that would be great.
>
> Cheers,
> --Lucas Machado
>
== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+
Newsgroups
= East and West-Coast Server Farms - Total Privacy via Encryption =
--
http://mail.python.org/mailman/listinfo/python-list
Re: programmatically calling a function
Doug Schwarz wrote: > I don't see how getattr solves the original problem. What, exactly, is > the first argument to getattr? mod = __import__(__this__) f = getattr(mod,"foo") I tend to prefer this over globals() because it seems a little less magical to me, especially when setting a global. Either this or gloabls() will work fine. Please don't use eval for stuff like this: that's not what it's for and it has the potential to be dangerous. -- CARL BANKS -- http://mail.python.org/mailman/listinfo/python-list
handling pywintypes.error exceptions
I'm using the win32 api to map samba shares, and I'm having trouble
handling some exceptions. In my script there are 2 possible exceptions
when the script attempts to map a share:
>>> win32net.NetUseAdd(None, 1, {'remote':r'\\foo\bar','local':'X
Traceback (most recent call last):
File "", line 1, in ?
pywintypes.error: (53, 'NetUseAdd', 'The network path was not found.')
This exception occurs when '\\foo\bar' is not an existing share. Also,
when a drive letter is already in use the following occurs:
>>> win32net.NetUseAdd(None, 1,
{'remote':r'\\some_server\share','local':'Y:'})
Traceback (most recent call last):
File "", line 1, in ?
pywintypes.error: (85, 'NetUseAdd', 'The local device name is already
in use.')
I know the exception raised in these cases is "pywintypes.error", but
how can i differentiate between the two exceptions? Being able to do
this is critical for my script
Thanks in advance,
--Lucas Machado
--
http://mail.python.org/mailman/listinfo/python-list
Re: enum question
M.N.A.Smadi wrote: > does python support a C-like enum statement where one can define a > variable with prespesified range of values? The thing is, variables don't have types; objects do. A variable can be bound to an object of any type, so there's no way to prespecify a range of values for a variable. Your question has the air of someone who's evaluating Python features, considering whether to try it. If so, you might need to widen your worldview a little to understand Python; its variables are fundamentally different from C, and things like enums don't make much sense in Python because of it. However, Python is versatile enough that you can get something to that effect if you really need it. -- CARL BANKS -- http://mail.python.org/mailman/listinfo/python-list
Re: Newbie getting confused again
Thanks, got it. "M.E.Farmer" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > It's me wrote: > > If I have: > > > > a = (1,2,3) > > > > how do I ended up with: > > > > res=[(1), (2), (3), (4), (5)] > > > > without doing: > > > > res=[(a[0]), (a[1]), (a[2]), (4), (5)] > > > > ??? > > > > ps: This is just a nobrainer example of what my real code is trying > to do. > > "a" might have many many elements. That's why the explicit indexing > method > > won't work. > > > > Thanks, > Hello, > List objects have a method called extend(). > It is made for this. > Py> a = [1,2,3] > Py> b = [4,5,6] > Py> a.extend(b) > Py> a > [1, 2, 3, 4, 5, 6] > Since you are a newbie I also suggest you look at > your objects a little and see what they have available. > > Py>dir(a) > ['__add__', '__class__', '__contains__', '__delattr__', '__delitem__', > '__delslice__', '__doc__', '__eq__', '__ge__', '__getattribute__', > '__getitem__', '__getslice__', '__gt__', '__hash__', '__iadd__', > '__imul__', '__init__', '__le__', '__len__', '__lt__', '__mul__', > '__ne__', '__new__', '__reduce__', '__repr__', '__rmul__', > '__setattr__', '__setitem__', '__setslice__', '__str__', 'append', > 'count', 'extend', 'index', 'insert', 'pop', 'remove', 'reverse', > 'sort'] > > Then you can try and get some help from Python. > Py>help(a.extend) > Help on built-in function extend: > > extend(...) > L.extend(iterable) -- extend list by appending elements from the > iterable > > And finally use pydoc it is very helpful. > Cl> python pydoc -g > hth, > M.E.Farmer > -- http://mail.python.org/mailman/listinfo/python-list
Re: Accessing Python parse trees
Manlio Perillo wrote: On 3 Mar 2005 11:15:28 -0800, "Lonnie Princehouse" <[EMAIL PROTECTED]> wrote: No. I don't think it's possible to read the parse tree used by the interpreter, especially as it is being created. Here are a couple of kludgy ideas that might come close, though: Is this a 'limitation' of the current version or it is impossible for the architecture of CPython? What about pypy? On a side note, check out the compiler module. You might find it to be friendlier and more useful than parser. Thanks for the hint. It is what I want. Unfortunately is seem to be not well documented. Anyway, here is an example of what I would like to do: #begin def foo(**kwargs): print kwargs foo(a = 1, b = 2, c = 3) #end In the current implementation kwargs is a dict, but I need to have the keyword argument sorted. Unfortunately subclassing fron dict and installing the class in the __builtin__ module (with the name 'dict') does not work, CPython uses only builtin types. With the compiler module I can obtain the keyword arguments in the order the were specified. The problem is how to do this for every call to foo! The nature of the interpreter is that the C code implementing function calls specifically uses a dict created in C rather than using the mechanisms that would be used to create a dict from within a python program, so you have no way to "hook" your own implementation in to the interpreter without modifying the C code. Introspection does have its limits, and unfortunately that's one of them. Sine the code that interprets the byte codes is pretty much all written in C, there's no way to affect something that does not already have Python run-time hooks provided (such as the __add__ method that allows you to implement a specific response to the binary "+" operator). What you probably need is a specific magic hook for the "**" operator, but I'm not sure that's going to happen any time soon ... regards Steve -- Meet the Python developers and your c.l.py favorites March 23-25 Come to PyCon DC 2005 http://www.pycon.org/ Steve Holden http://www.holdenweb.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Win32 drive mapping... aka "net use"
I have already seen the "net help use" and i know how to manage samba shares from a command prompt. What i need help with is using the win32 api for python to manage shares --Lucas -- http://mail.python.org/mailman/listinfo/python-list
Re: GOTO (was Re: Appeal for python developers)
beliavsky wrote:
> Goto is useful in breaking out of a nested loop and when there is a
> clean-up section of a function that should be executed for various
> error conditions.
But much less useful in languages like Python which have exception
handling.
At rare times I've needed something like
for i in xrange:
for j in yrange:
for k in zrange:
if lookup(i,j,k) == target:
completely break out of the loop
else:
raise Exception("not found")
print "I have it!", i, j, k
There are four common solutions to this problem
1) use a goto statement to break out of the loop
for i in xrange:
for j in yrange:
for k in zrange:
if lookup(i,j,k) == target:
goto FOUND
else:
raise Exception("not found")
FOUND:
print "I have it!", i, j, k
2) wrap things inside of an exception
try:
for i in xrange:
for j in yrange:
for k in zrange:
if lookup(i,j,k) == target:
raise Found
else:
raise Exception("not found")
except Found:
pass
print "I have it!", i, j, k
3) have a mutiple-level break statement
for i in xrange:
for j in yrange:
for k in zrange:
if lookup(i,j,k) == target:
break 3
else:
raise Exception("not found")
print "I have it!", i, j, k
4) introduce a new function, possibly embedded
def _search():
for i in xrange:
for j in yrange:
for k in zrange:
if lookup(i,j,k) == target:
return i, j, k
raise Exception("not found")
i,j,k = _search()
print "I have it!", i, j, k
Both the exception and function definitions solutions can be
done now and I don't think the goto solution adds extra clarity
or elegance, so there's little gain at the expense of some
rather well known pitfalls.
> In another newsgroup I once asked "who needs GOTO" and got some good
> answers -- the thread can be found by Googling '[EMAIL PROTECTED]
> "explicit GOTO"'. Goto's are less dangerous when they are in the
> forward direction, to code appearing later.
I only found two google hits, both in a Fortran newsgroup. Other
posts by you suggest you often program in that language. Fortran
doesn't have exceptions, so gotos are the best solution for how
to do certain types of error handling. The same holds for C,
as you can tell by reading the Python source code.
Andrew
[EMAIL PROTECTED]
--
http://mail.python.org/mailman/listinfo/python-list
Re: programmatically calling a function
Doug Schwarz wrote:
>> > Dave,
>> >
>> > I think eval might be what you're looking for:
>> >
>> > f = eval('len')
>> > length = f([1,2,3])
>>
>> But only if the string given to eval is checked thorougly for allowed
>> contents. Better use getattr.
>
> Actually, upon reading Peter Hansen's reply more carefully, I wil defer
> to his approach, namely,
>
> def foo():
> print "foo"
>
> f = globals()["foo"]
>
> as I suspect that it will be more efficient. You still need to make
> sure that the string in question is one of the keys in the globals()
> dictionary or else handle the error -- just as with eval.
Well, with eval, you need to really check the string before calling
eval, with globals() you just need to catch an KeyError, which is cheaper.
> I don't see how getattr solves the original problem. What, exactly, is
> the first argument to getattr?
If run at the toplevel, __main__. If the functions are in a module, this
module. But you are right, globals() is more understandable.
However, if the use case is as in the OP's example, Peter Hansen's first
approach is surely the fastest and most concise.
Reinhold
--
http://mail.python.org/mailman/listinfo/python-list
Re: Win32 drive mapping... aka "net use"
Lucas Machado wrote:
> Alex Martelli wrote:
>
> > import win32net
> >
win32net.NetUseAdd(None,1,{'remote':r'\\server\share','local':'K:'})
> >
> > is an example (not all that easy to fathom from the docs, but I
> > found it out with a little help from the docs, a little from MSDN,
> > and a little experimentation).
>
> I looked through the MSDN and was not able to find much information
on
> how to properly use the NetUseAdd function.
C:\>net help use
> I searched for the
> function and looked through the results but all it showed was some
data
> structure, but i was actually looking for a list of all possible
> arguments and which arguments were/were not required.
The syntax of this command is:
NET USE
[devicename | *] [\\computername\sharename[\volume] [password | *]]
[/USER:[domainname\]username]
[/USER:[dotted domain name\]username]
[/USER:[EMAIL PROTECTED] domain name]
[/SMARTCARD]
[/SAVECRED]
[[/DELETE] | [/PERSISTENT:{YES | NO}]]
NET USE {devicename | *} [password | *] /HOME
NET USE [/PERSISTENT:{YES | NO}]
NET USE connects a computer to a shared resource or disconnects a
computer from a shared resource. When used without options, it lists
the computer's connections.
devicename Assigns a name to connect to the resource or specifies
the device to be disconnected. There are two kinds of
devicenames: disk drives (D: through Z:) and printers
(LPT1: through LPT3:). Type an asterisk instead of a
specific devicename to assign the next available
devicename.
\\computername Is the name of the computer controlling the shared
resource. If the computername contains blank
characters,
enclose the double backslash (\\) and the computername
in quotation marks (" "). The computername may be from
1 to 15 characters long.
\sharename Is the network name of the shared resource.
\volume Specifies a NetWare volume on the server. You must
have
Client Services for Netware (Windows Workstations)
or Gateway Service for Netware (Windows Server)
installed and running to connect to NetWare servers.
password Is the password needed to access the shared resource.
*Produces a prompt for the password. The password is
not displayed when you type it at the password prompt.
/USERSpecifies a different username with which the
connection
is made.
domainname Specifies another domain. If domain is omitted,
the current logged on domain is used.
username Specifies the username with which to logon.
/SMARTCARD Specifies that the connection is to use credentials on
a smart card.
/SAVECREDSpecifies that the username and password are to be
saved.
This switch is ignored unless the command prompts for
username
and password. This option is not available on Windows
XP
Home Edition and will be ignored.
/HOMEConnects a user to their home directory.
/DELETE Cancels a network connection and removes the
connection
from the list of persistent connections.
/PERSISTENT Controls the use of persistent network connections.
The default is the setting used last.
YES Saves connections as they are made, and restores
them at next logon.
NO Does not save the connection being made or subsequent
connections; existing connections will be restored at
next logon. Use the /DELETE switch to remove
persistent connections.
NET HELP command | MORE displays Help one screen at a time.
>
> my problem with the above NetUseAdd example is that I would rather
not
> have to specify a device. In the script I am writing the user may
> choose to map multiple shares so I need to be able to map to the next
> available device:
>
> net use * \\some_server\share_name
net use * \\some_server\share_name
>
> instead of:
>
> net use k: \\server\share
>
> Thanks for the help in advance. Also, if anyone could provide a link
> to good windows api docs for python that would be great.
>
> Cheers,
> --Lucas Machado
--
http://mail.python.org/mailman/listinfo/python-list
Re: Win32 drive mapping... aka "net use"
Alex Martelli wrote:
> import win32net
> win32net.NetUseAdd(None,1,{'remote':r'\\server\share','local':'K:'})
>
> is an example (not all that easy to fathom from the docs, but I
> found it out with a little help from the docs, a little from MSDN,
> and a little experimentation).
I looked through the MSDN and was not able to find much information on
how to properly use the NetUseAdd function. I searched for the
function and looked through the results but all it showed was some data
structure, but i was actually looking for a list of all possible
arguments and which arguments were/were not required.
my problem with the above NetUseAdd example is that I would rather not
have to specify a device. In the script I am writing the user may
choose to map multiple shares so I need to be able to map to the next
available device:
net use * \\some_server\share_name
instead of:
net use k: \\server\share
Thanks for the help in advance. Also, if anyone could provide a link
to good windows api docs for python that would be great.
Cheers,
--Lucas Machado
--
http://mail.python.org/mailman/listinfo/python-list
python/mod_python conflicts...
hi... i have a linux redhat8 server. i'm trying to get python andmod_python to play nicely, meaning that i have the right mod_python for the python that i've installed. it appears that the box has multiple versions of python. when i'm 'root' the python version is 2.2.1 when i'm a user 'test', the version is 2.3.5 when i do a 'rpm -q python, i get python-2.2.1-17 as being what was/is installed via 'rpm' when i do a 'rpm -q mod_python, i get mod_python-3.1.3-5 as being what was/is installed via 'rpm' --- i tried to do an upgrade of the python/mod_python using the rpms from redhat for RH8 and RH9 and got the following err msg from the command line python/interpreter: >>> import mod_python . . . ImportError: No module named psp This happened for both the RH8 and RH9 rppms that I used... so... any ideas as to how to get this situation to work/resolved... thanks -bruce -- http://mail.python.org/mailman/listinfo/python-list
Re: Appeal for python developers (THIS IS A TROLL)
Dave Reed wrote: Or more likely a troll. Google for: Boogieman yahoo troll and you'll see this isn't the only place he/she does this sort of thing. I'm not convinced. -- Michael Hoffman -- http://mail.python.org/mailman/listinfo/python-list
Re: os.join Windows action
Colin J. Williams wrote:
C:\XXX is required, C:XXX is not acceptable.
C:XXX is acceptable, it just means something entirely different from
C:\XXX. There is a current working directory on each drive. C:XXX is
file XXX in the current directory on drive C:.
How should os.path.join('C:', 'ugh') be treated?
Exactly as it is? If you want other behavior, you want
os.path.join('C:\\', 'ugh').
--
Michael Hoffman
--
http://mail.python.org/mailman/listinfo/python-list
Re: programmatically calling a function
In article <[EMAIL PROTECTED]>,
Reinhold Birkenfeld <[EMAIL PROTECTED]> wrote:
> Doug Schwarz wrote:
>
> > Dave,
> >
> > I think eval might be what you're looking for:
> >
> > f = eval('len')
> > length = f([1,2,3])
>
> But only if the string given to eval is checked thorougly for allowed
> contents. Better use getattr.
>
> Reinhold
Actually, upon reading Peter Hansen's reply more carefully, I wil defer
to his approach, namely,
def foo():
print "foo"
f = globals()["foo"]
as I suspect that it will be more efficient. You still need to make
sure that the string in question is one of the keys in the globals()
dictionary or else handle the error -- just as with eval.
I don't see how getattr solves the original problem. What, exactly, is
the first argument to getattr?
--
Doug Schwarz
dmschwarz&urgrad,rochester,edu
Make obvious changes to get real email address.
--
http://mail.python.org/mailman/listinfo/python-list
Re: survey
Dave Zhu wrote: > Hello All, > > Is there any survey on scripting languages? I would > like to get information on several scripting languages > including Python, Perl, Ruby, Tcl, etc. The Language Shootout at http://shootout.alioth.debian.org/ has code samples in many languages, both interpreted and compiled, including the ones you mentioned. Don't trust the lines-of-code statistics, though -- the LOC measure is wrongly shown as zero for several codes, and comment lines are counted, so that languages with programmers who use more comments are penalized. You can obtain the paper "Are Scripting Languages Any Good? A Validation of Perl, Python, Rexx, and Tcl against C, C++, and Java." by Prechelt at http://page.mi.fu-berlin.de/~prechelt/Biblio/ -- his answer is "yes". -- http://mail.python.org/mailman/listinfo/python-list
Re: Appeal for python developers
On 2005-03-05, BOOGIEMAN <[EMAIL PROTECTED]> wrote: > Please include "goto" command in future python realeses > I know that proffesional programers doesn't like to use it, > but for me as newbie it's too hard to get used replacing it > with "while", "def" or other commands Troll. -- Grant Edwards grante Yow! RELAX!!... This at is gonna be a HEALING visi.comEXPERIENCE!! Besides, I work for DING DONGS! -- http://mail.python.org/mailman/listinfo/python-list
Re: Newbie getting confused again
It's me wrote: > If I have: > > a = (1,2,3) > > how do I ended up with: > > res=[(1), (2), (3), (4), (5)] > > without doing: > > res=[(a[0]), (a[1]), (a[2]), (4), (5)] > > ??? > > ps: This is just a nobrainer example of what my real code is trying to do. > "a" might have many many elements. That's why the explicit indexing method > won't work. > > Thanks, Hello, List objects have a method called extend(). It is made for this. Py> a = [1,2,3] Py> b = [4,5,6] Py> a.extend(b) Py> a [1, 2, 3, 4, 5, 6] Since you are a newbie I also suggest you look at your objects a little and see what they have available. Py>dir(a) ['__add__', '__class__', '__contains__', '__delattr__', '__delitem__', '__delslice__', '__doc__', '__eq__', '__ge__', '__getattribute__', '__getitem__', '__getslice__', '__gt__', '__hash__', '__iadd__', '__imul__', '__init__', '__le__', '__len__', '__lt__', '__mul__', '__ne__', '__new__', '__reduce__', '__repr__', '__rmul__', '__setattr__', '__setitem__', '__setslice__', '__str__', 'append', 'count', 'extend', 'index', 'insert', 'pop', 'remove', 'reverse', 'sort'] Then you can try and get some help from Python. Py>help(a.extend) Help on built-in function extend: extend(...) L.extend(iterable) -- extend list by appending elements from the iterable And finally use pydoc it is very helpful. Cl> python pydoc -g hth, M.E.Farmer -- http://mail.python.org/mailman/listinfo/python-list
os.join Windows action
I am puzzled by the Windows XP usage below:
C:\Python23\Lib\site-packages\PyMatrix>c:python23\python
The system cannot find the path specified.
C:\Python23\Lib\site-packages\PyMatrix>c:python23\python.exe
The system cannot find the path specified.
C:\Python23\Lib\site-packages\PyMatrix>c:\python23\python.exe
Python 2.3.5 (#62, Feb 8 2005, 16:23:02) [MSC v.1200 32 bit
(Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> ^Z
C:\Python23\Lib\site-packages\PyMatrix>c:\python23\python
Python 2.3.5 (#62, Feb 8 2005, 16:23:02) [MSC v.1200 32 bit
(Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>>
C:\XXX is required, C:XXX is not acceptable.
The os.path.join doc has:
*join*( path1[, path2[, ...]])
Joins one or more path components intelligently. If any
component is an absolute path, all previous components are
thrown away, and joining continues. The return value is the
concatenation of path1, and optionally path2, etc., with exactly
one directory separator (|os.sep|) inserted between components,
unless path2 is empty. Note that on Windows, since there is a
current directory for each drive, os.path.join("c:", "foo")
represents a path relative to the current directory on drive C:
(c:foo), not c:\\foo.
How should os.path.join('C:', 'ugh') be treated?
Colin W.
--
http://mail.python.org/mailman/listinfo/python-list
GOTO (was Re: Appeal for python developers)
Torsten Bronger wrote: > Hallöchen! > > BOOGIEMAN <[EMAIL PROTECTED]> writes: > > > Please include "goto" command in future python realeses I know > > that proffesional programers doesn't like to use it, but for me as > > newbie it's too hard to get used replacing it with "while", "def" > > or other commands > > Accordings to Stroustrup's C++ book, the only good reason for goto > statements in a language is to have it in computer-generated code. > I don't know whether programs generate Python, but I *think* that > even there "goto" can be avoided very easily. Goto is useful in breaking out of a nested loop and when there is a clean-up section of a function that should be executed for various error conditions. In another newsgroup I once asked "who needs GOTO" and got some good answers -- the thread can be found by Googling '[EMAIL PROTECTED] "explicit GOTO"'. Goto's are less dangerous when they are in the forward direction, to code appearing later. -- http://mail.python.org/mailman/listinfo/python-list
Re: Appeal for python developers
Torsten Bronger wrote: > Accordings to Stroustrup's C++ book, the only good reason for goto > statements in a language is to have it in computer-generated code. I've needed goto statements when translating old code written with gotos. > Most gotos are disguised function calls, so > just copy the code in a "def". And loops can be translated to > "while"s almost trivially. True, but there are some that aren't easily translated. I remember implementing code from Knuth. I think it was a prime generation algorithm. It was MIX code that interwove two loops and couldn't be easily untangled. Since I just wanted to text it out I used C++ which had both gotos and priority queues built in. Andrew [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: Appeal for python developers (THIS IS A TROLL)
HallÃchen! Dave Reed <[EMAIL PROTECTED]> writes: > On Saturday 05 March 2005 09:34, Thomas RÃsner aka TRauMa wrote: > >> [...] >> >> Technically, as a newbie you shouldn't know about GOTO at all. So >> you're more a "Tainted by previous spaghetti code practices"-guy >> than newbie. > > Or more likely a troll. Google for: > > Boogieman yahoo troll > > and you'll see this isn't the only place he/she does this sort of > thing. And this makes a troll? TschÃ, Torsten. -- Torsten Bronger, aquisgrana, europa vetus -- http://mail.python.org/mailman/listinfo/python-list
Re: Relative imports
Chris wrote: After reading that link I tried to change my imports like this: " from .myPythonFileInTheSameFolder import MyClass" This style of import is not yet implemented. I'm getting more and more confused... How can I correctly do a relative import ? I think your choices are - keep doing what you have been doing and ignore the warnings from PyLint - keep doing what you have been doing and turn off the warnings from PyLint - rewrite your imports to be absolute imports Kent -- http://mail.python.org/mailman/listinfo/python-list
site-packages versus site-python
I recently installed python 2.4, and many installed software packages stopped working. Some things got working after I copied some files and directories from /usr/lib/python2.3/site-packages to /usr/lib/python2.4/site-packages, but I also had to install a newer PyXml package, as some of the files that came with python2.4 required a newer version of pyxml than I had in python2.3/site-packages. I wonder if there is any particular reason I have no /usr/lib/site-python directory, and everything is installed in version-specific site-packages. I have Fedora Core 3. Is it the Fedora packagers who prefer installing everything in the version-specific directory? Is there no way to have older packages continue working in the presence of python2.4? (I still want the newest to be the default!) I have tried (cd /usr/bin; grep '#!.*python' * 2>/dev/null), and very few of the programs have a specific version in the interpreter line. Is there any good reason this is so? Thinking about it, a particular python program may require a particular module, but not any particular version of python or the module. The module perhaps requires at least python2.3, but could run just as well with python2.4 or later. It does not make sense to have the program demand a particular version of python in its interpreter string (e.g., "#!/usr/bin/python2.3"), but what about the module. Would it be better to put the module in site-python and include code to check the interpreter version? Perhaps there is no perfect solution that covers all permutations, but on the other hand, what is currently the "correct philosophy" of version handling? -- http://mail.python.org/mailman/listinfo/python-list
Re: enum question
M.N.A.Smadi wrote: does python support a C-like enum statement where one can define a variable with prespesified range of values? thanks m.smadi >>> BLUE, RED, GREEN = 1,5,8 >>> BLUE 1 >>> RED 5 >>> GREEN 8 -- http://mail.python.org/mailman/listinfo/python-list
Re: Relative imports
After reading that link I tried to change my imports like this: " from .myPythonFileInTheSameFolder import MyClass" Well, this caused an error in PyLint: Encountered "." at line 1, column 6. Was expecting one of: "or" ... "and" ... "not" ... "is" ... "in" ... "lambda" ... "if" ... "else" ... "elif" ... "while" ... "for" ... "try" ... "except" ... "def" ... "class" ... "finally" ... "print" ... "pass" ... "break" ... "continue" ... "return" ... "yield" ... "import" ... "from" ... "del" ... "raise" ... "global" ... "exec" ... "assert" ... "as" ... ... ID:E0001 invalid syntax I'm getting more and more confused... How can I correctly do a relative import ? -- http://mail.python.org/mailman/listinfo/python-list
Re: Calling python scripts from php
In article <[EMAIL PROTECTED]>,
Michael Livingston <[EMAIL PROTECTED]> wrote:
>Hi all,
>
>I'm currently working on a project to develop an online simulation model of
>the juvenile justice system in Queensland. We've developed the simulation
>model using the python module simPy and currently we're trying to link the
>simulation model to a web interface. Unfortunately, the web interface and
>its interactions with the database have been separately developed in PHP and
>ASP. Rather than rebuilding the web interface using python, we're looking
>for an easy way to call a python script from within PHP. In particular,
>we'd like to have the script called but, as running the model can take some
>time, we'd prefer if the browser didn't have to sit and wait while the
>script was running (instead, we intend to notify the user via email when
>their model has completed). So all we really want to do is start the script
>off and running (it's a simple call to a python method).
>
>If you're particularly interested in helping me out and if I've not been
>entirely clear, you can go to:
>
> http://210.49.85.147:8000/justicemodel/login.php
>
>and log in using the user name: temp and the password: pass, select a model
>and go to the workspace - the button 'run model' is what we want to trigger
>the python script, while all the rest of the website (setting up the model
>scenarios, viewing output etc etc) has been developed in php and asp. Any
>assistance anyone can offer me would be greatly appreciated.
.
.
.
I'm sure there's a satisfactory solution. I'd be happy to work
with you, even on a professional basis. It might be quite simple
... To make any progress, I or anyone helping you through
comp.lang.python will need to understand clearly your description.
When you write, " So all we really want to do is start the script
off and running (it's a simple call to a python method)", do you
realize that's more of a PHP then Python question? The answer
is messy (from a Python perspective), but certainly feasible. I
assume your server is a Win* host; Unix would be easier. Briefly,
you need to exec("start ...") (or even system("exec ..."), if you
prefer), and to do so successfully you'll probably need to adjust
the configuration of your PHP installation.
--
http://mail.python.org/mailman/listinfo/python-list
Re: Appeal for python developers (THIS IS A TROLL)
On Saturday 05 March 2005 09:34, Thomas Rösner aka TRauMa wrote: > BOOGIEMAN wrote: > > Please include "goto" command in future python realeses > > I know that proffesional programers doesn't like to use it, > > but for me as newbie it's too hard to get used replacing it > > with "while", "def" or other commands > > Technically, as a newbie you shouldn't know about GOTO at all. So you're > more a "Tainted by previous spaghetti code practices"-guy than newbie. Or more likely a troll. Google for: Boogieman yahoo troll and you'll see this isn't the only place he/she does this sort of thing. Please don't feed the trolls. Dave -- http://mail.python.org/mailman/listinfo/python-list
Re: Appeal for python developers
HallÃchen! BOOGIEMAN <[EMAIL PROTECTED]> writes: > Please include "goto" command in future python realeses I know > that proffesional programers doesn't like to use it, but for me as > newbie it's too hard to get used replacing it with "while", "def" > or other commands Accordings to Stroustrup's C++ book, the only good reason for goto statements in a language is to have it in computer-generated code. I don't know whether programs generate Python, but I *think* that even there "goto" can be avoided very easily. Anyway, at our institute we control devices with HT Basic, and my collegues have used lots of gotos, so I can understand that avoiding them is somewhat inconvenient at the beginning. However, it's still very easy to learn. Most gotos are disguised function calls, so just copy the code in a "def". And loops can be translated to "while"s almost trivially. After a couple of days, it'll be even simpler than before. TschÃ, Torsten. -- Torsten Bronger, aquisgrana, europa vetus -- http://mail.python.org/mailman/listinfo/python-list
Re: programmatically calling a function
Doug Schwarz wrote:
> Dave,
>
> I think eval might be what you're looking for:
>
> f = eval('len')
> length = f([1,2,3])
But only if the string given to eval is checked thorougly for allowed
contents. Better use getattr.
Reinhold
--
http://mail.python.org/mailman/listinfo/python-list
Re: Appeal for python developers
BOOGIEMAN wrote: Please include "goto" command in future python realeses I know that proffesional programers doesn't like to use it, but for me as newbie it's too hard to get used replacing it with "while", "def" or other commands Technically, as a newbie you shouldn't know about GOTO at all. So you're more a "Tainted by previous spaghetti code practices"-guy than newbie. Have a look at "while ... else" and "break". Or use the april special release of python featuring goto. But expect to be called names :-). Regards T. -- http://mail.python.org/mailman/listinfo/python-list
Re: Appeal for python developers
BOOGIEMAN wrote: Please include "goto" command in future python realeses As has been said before, you can only use goto in Python if you are using Python with line numbers: http://groups-beta.google.com/group/comp.lang.python/msg/98264a0daa007c46 > I know that proffesional programers doesn't like to use it, > but for me as newbie it's too hard to get used replacing it > with "while", "def" or other commands I suggest you learn. It shouldn't take you very long to get used to it, and it will be much easier after you do so. Trust us. ;) -- Michael Hoffman -- http://mail.python.org/mailman/listinfo/python-list
Re: programmatically calling a function
In article <[EMAIL PROTECTED]>,
Dave Ekhaus <[EMAIL PROTECTED]> wrote:
> hi
>
> i'd like to call a python function programmatically - when all i have
> is the functions name as a string. i.e.
>
>
> fnames = ['foo', 'bar']
>
> for func in fnames:
>
> #
> # how do i call function 'func' when all i have is the name of the
> function ???
> #
>
>
>
> def foo():
>
> print 'foo'
>
> def bar():
>
> print 'bar'
>
>
> i'd really appreciate any help the 'group' has to offer.
>
>
> thanks
> dave
Dave,
I think eval might be what you're looking for:
f = eval('len')
length = f([1,2,3])
By the way, are you the Dave Ekhaus I used to work with at Kodak?
--
Doug Schwarz
dmschwarz&urgrad,rochester,edu
Make obvious changes to get real email address.
--
http://mail.python.org/mailman/listinfo/python-list
Appeal for python developers
Please include "goto" command in future python realeses I know that proffesional programers doesn't like to use it, but for me as newbie it's too hard to get used replacing it with "while", "def" or other commands -- http://mail.python.org/mailman/listinfo/python-list
Re: survey
In article <[EMAIL PROTECTED]>, Peter Hansen <[EMAIL PROTECTED]> wrote: >Dave Zhu wrote: >> Hello All, >> >> Is there any survey on scripting languages? I would >> like to get information on several scripting languages >> including Python, Perl, Ruby, Tcl, etc. > >What kind of information? ... Precisely. There are whole books http://www.amazon.com/exec/obidos/ASIN/1578700108/002-9216984-6160028 > on this subject; there are breezy sketches http://www.itworld.com/AppDev/4061/swol-0202-regex/ > you can read in a single setting; and 'most everything between. Who wants to know? Is your real interest to know what the job market for each language is, or the syntax of arithmetic in each language, or which one has the best Conferences, or ...? http://www.catb.org/~esr/faqs/smart-questions.html > -- http://mail.python.org/mailman/listinfo/python-list
Re: programmatically calling a function
You might also want to take a peek at the getattr() function: http://docs.python.org/lib/built-in-funcs.html#l2h-31 -- http://mail.python.org/mailman/listinfo/python-list
Re: Accessing Python parse trees
Manlio Perillo wrote: Anyway, here is an example of what I would like to do: #begin def foo(**kwargs): print kwargs foo(a = 1, b = 2, c = 3) #end In the current implementation kwargs is a dict, but I need to have the keyword argument sorted. Unfortunately subclassing fron dict and installing the class in the __builtin__ module (with the name 'dict') does not work, CPython uses only builtin types. With the compiler module I can obtain the keyword arguments in the order the were specified. The problem is how to do this for every call to foo! Why not just pass the kind of argument you want? What is it you really need to do? def foo(kwds): print kwds foo(MyDict(a = 1, b = 2, c = 3)) Kent -- http://mail.python.org/mailman/listinfo/python-list
Re: intigrate the PyGame module with my Python
[EMAIL PROTECTED] wrote: I want to intigrate the PyGame module with my Python exe, means i DONT want to generate .PYD files separtely rather than that want to put PyGame "c" src with Python workspace of VC project workspace. I am unable to import the sub modules( display, rect etc) of pygame, its raising errors, am giving the steps i followed, plz help me in this case I am stuck at the "pygame" embedding using microsoft visual c++ under win2000 os. Formarly I have done following activities : 1. Downloaded the windows binary for python 1.5.2 from python.org. 2. Downloaded the sdl windows binary package from pysdl.org. 3. successfully integrated the sdl library into the python15 project. A sample py script was tested successfully. 4. Downloaded pygame 1.6 source from pygame.org. 5. Integrated the code into vc project. 6. On similar lines to sdl, the necessary changes were done ( as pygame happens to be successor to sdl). Initially, the pygame module was not being recognized by the environment. Regards, Devendra You don't want to put the Pygame files in the pythonxy.exe (where xy is your version number) file, but rather the pythonxy.dll file. -- http://mail.python.org/mailman/listinfo/python-list
Re: Relative imports
Michael Hoffman wrote: Chris wrote: Why do relative imports cause warnings in PyLint? http://www.python.org/peps/pep-0328.html#rationale-for-absolute-imports I notice that this section says that from __future__ import absolute_import will be a feature of Python 2.4. Apparently it didn't make the cut. I've posted a bug report. Kent -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.4 removes None data type?
Steve Holden <[EMAIL PROTECTED]> writes: > Warren Postma wrote: [...] > > gloat. Are there any really evil glitches LEFT in Python? Now go > > look at Perl and come back and say > > "Thank-deity-of-my-choice-I'm-using-Python". > > > Remaining warts that won't disappear: > > print >> file, stuff Not beautiful, yes, but evil? Why? > @decorator Evil in the wrong hands... John -- http://mail.python.org/mailman/listinfo/python-list
Re: "Static" python program
On Fri, 04 Mar 2005 12:10:00 +0100, Daniel Frickemeier <[EMAIL PROTECTED]> wrote: > I´m developing a small python-program wiht the mysql-python-module. > The program should run on a server without any mysql-installation. > Is there any posibility to "kompile" a python with static libaries? Sure, have a look at cx_Freeze or py2exe. both are tools that allow you to create an executable without dependancies. Stephen. -- http://mail.python.org/mailman/listinfo/python-list
Re: Accessing Python parse trees
On 3 Mar 2005 11:15:28 -0800, "Lonnie Princehouse" <[EMAIL PROTECTED]> wrote: >No. I don't think it's possible to read the parse tree used by the >interpreter, especially as it is being created. Here are a couple of >kludgy ideas that might come close, though: Is this a 'limitation' of the current version or it is impossible for the architecture of CPython? What about pypy? > >On a side note, check out the compiler module. You might find it to be >friendlier and more useful than parser. Thanks for the hint. It is what I want. Unfortunately is seem to be not well documented. Anyway, here is an example of what I would like to do: #begin def foo(**kwargs): print kwargs foo(a = 1, b = 2, c = 3) #end In the current implementation kwargs is a dict, but I need to have the keyword argument sorted. Unfortunately subclassing fron dict and installing the class in the __builtin__ module (with the name 'dict') does not work, CPython uses only builtin types. With the compiler module I can obtain the keyword arguments in the order the were specified. The problem is how to do this for every call to foo! Thanks and regards Manlio Perillo -- http://mail.python.org/mailman/listinfo/python-list
Re: Integer From A Float List?!?
[EMAIL PROTECTED] wrote: Hello NG, sorry to bother you again with this question... I never used the "timeit" function, and I would like to ask you if the call I am doing is correct: C:\Python23\Lib>python timeit.py -n 1000 -s "from Numeric import ones" -s "floa ts=ones((1000,1),'f')" -s "ints = floats.astype(int)" 1000 loops, best of 3: 0.0536 usec per loop The -s option indicates Setup steps that are done outside the timing loop. So you have timed 1000 empty loops, which is indeed impressively fast :-) The correct command is C:\Python23\Lib>python23 timeit.py -n 1000 -s "from Numeric import ones" -s "floats=ones((1000,1),'f')" "ints = floats.astype(int)" 1000 loops, best of 3: 30.7 usec per loop which is still impressively fast compared to map: C:\Python23\Lib>python timeit.py -s "floats = map(float, range(1000))" "ints= map(int, floats)" 1000 loops, best of 3: 572 usec per loop Kent I used Numeric module to create a 1000 floats matrix of ones, and it seems to me that is a lot faster than other solutions... but probably I am doing something wrong in my call to the timeit function... Thank you a lot. Andrea. -- http://mail.python.org/mailman/listinfo/python-list
GUI Guy auto-reply
Thanks for e-mailing GUI Guy. Please note the following: If your e-mail was a request for technical support, it will be ignored. Please use the support forums available online here: http://guiguy.wminds.com/forums/ Due to large amounts of spam and recent increased virus activity, I am no longer accepting mail sent to this e-mail address unless it contains a specific string of text in the subject. If your e-mail is not a request for technical support and you would like me to read it, please re-send it with the following text anywhere in the subject (without the quotes): "--nospam here--" Thanks and sorry for the hassle. Best regards, GUI Guy -- http://mail.python.org/mailman/listinfo/python-list
Integer From A Float List?!?
Hello NG, sorry to bother you again with this question... I never used the "timeit" function, and I would like to ask you if the call I am doing is correct: C:\Python23\Lib>python timeit.py -n 1000 -s "from Numeric import ones" -s "floa ts=ones((1000,1),'f')" -s "ints = floats.astype(int)" 1000 loops, best of 3: 0.0536 usec per loop I used Numeric module to create a 1000 floats matrix of ones, and it seems to me that is a lot faster than other solutions... but probably I am doing something wrong in my call to the timeit function... Thank you a lot. Andrea. -- http://mail.python.org/mailman/listinfo/python-list
