Python Forum

Hi, simple question, how to execute command in current shell, not in subshell? Example. I have environment variable A=aaa and need to invoke shell (sh) script which will do something with A. If I do os.system() then sub-shell will setup A and execute my script there leaving A in parent shell untouched. Thanks,

I have a python program I need to interface with an api. The api is native C but they also have a perl wrapper. I'm thinking along the lines of "pyperl" or perhaps pyInline. I don't feel astute enough in C to create my own wrappers.

Hi- I've been searching the web for a while and I've been unable to find a way to access c data objects in python without using SWIG. I can do methods just fine but I can't access variables. It seems like PyModule_AddObject should work but it segfaults my program. There's a good chance I'm just using it wrong, or I should be using...

Python experts, Is there a more pythonic way to do something evquilent to what this line does without creating a dummy class? self.file = type("", (object,), {'close':lambda slf: None})() As you can guess, I want a dummy object that I can call close on with impunity.

Imagine I have a dict looking something like this: myDict = {"key 1": , "key 2": , "key 3": , "key 4": } That is, a set of keys which have a variable length list of associated values after them. What I want to do is filter out a subset of this dict to produce another dict that satisfies a set of criteria (in this case whether it...

Hi, Does anyone have any experience with Optical Character Recognition in Python? I would like to automatically register emails with a free emails provider e.g. Yahoo or Hotmail. The problem is that, for a successful registration, I must fill in characters shown in a picture. So I need to recognize the characters in a picture. Any idea how?...

Hi, Consider the following class: >>> class Test(object): .... def __init__(self, obj): .... self.__obj = obj .... def __getattr__(self, name): .... return getattr(self.__obj, name) ....

Hello! My name is Nick Soutter, I am the owner of a small game company in San Diego, CA called Aepox Games (www.aepoxgames.net). Our first product, Andromeda Online (www.andromedaonline.net), goes

I'll be quick. Here's a transcript: C:\usr\WConio-1.5>python setup.py build --compiler=mingw32 running build running build_py running build_ext building '_WConio' extension writing build\temp.win32-2.3\Release\_WConio.def C:\MINGW32\BIN\dllwrap.exe -mno-cygwin -mdll -static --output-lib build\temp.win

Gmpy module was a wrapper of the GNU MP library. It seems that no evolution is done on this module since 2001. Indeed, Gmpy is not supported in Python 2.2 nor 2.3. My question is the following: what is the better replacement solution for manipulating long numbers. I want to do long numbers exponentiations. Thanks in advance for your...

Is there a way to go from the AST output of compiler.paser to byte code i.e. in the example below, is there a way to compile m and get a code object that could then be called? cheers and thanks for the help chris wright

Hi all, I use the Win32 extension (Build 157) module with Python 2.3 to add row in a sql server 2000 sp3 DB. My problem is I can not insert data of type money in the DB. I use the following command to create the parameter : prm = cmd.CreateParameter('Open', constants.adCurrency, constants.adParamInput, 8, 12.10)...

Hi, I have a small test to "compile" al litle script as a WMI-Tester. The script include a wmi-wrapper and "insert" the Win32-modeles. here the code: my "WMI-Tester.py" ----- import wmi

I've downloaded both source distro, and binary installer. Installed python with the binary installer, when I attempted to compile mxDateTime (mxBase) for 2.3 with MSVC 6.0 I got an error that seemed related to forward declarations. It seems that the #defines that makes staticforward into extern when using the MSVC 6 compiler has been...

The new itertools stuff is pretty cool. One thing that bothers me though is that there seems to be no way to copy an iterator. How does one work around this? Is there a trick that I am missing? Without being able to 'split' an iterator, I can't think of how to do some of the cool things you can do with lazy lists in Haskell. It seems...

Running xrced.py produced: Traceback (most recent call last): File "C:\Python23\Lib\site-packages\wxPython\tools\XRCed\xrced.py", line 28, in ? from tree import * # imports xxx which imports params File "C:\Python23\Lib\site-packages\wxPython\tools\XRCed\tree.py", line 1174 ^ SyntaxError: invalid syntax ---

I must not be getting the point of this from the documentation. I want to connect to a URL and see what it redirects to. I built a redirect handler that does nothing much (for testing) and installed it thusly: import urllib2 class R(urllib2.HTTPRedirectHandler): def redirect_request(req,fp,code,msg,hdrs): print "%s, %s, %s, %s, %s" %...

Hi, Is it possible to change how the "def" builtin command works? Specifically I want to modify def to write to a log file when a function executes (for instance the name of the function, when it was executed - that sort of thing). I want to avoid having to put some code in each and every function I write to do this logging for me. ...

If you do not null out the output of your parent process that launches a child process by os.spawnv( ) in P_NOWAIT mode, you will see that your child process is launched *synchronously* instead of asynchronously. This is a bug! Here's a code sample: In your parent.py file, call child.py as ...

Try to launch a test program that prints hello world for a minute or so using, spawnv( ) or spawnl( ). Check to see the process state code that the program is running. I am using RedHat Linux 7.3 and Python 2.2.2 and i see that the program is either launched as Zombie state using spawnv(), or running in State "S" sleep in spawnl( ). Here's...

Hi, On python2.1.3, python2.2.1 and python2.2.3 round(22.47,2) gives 22.469999999999999 . Does anyone know if this is a bug or some weird, yet unexpected, behaviour? P.S. I haven't tested python2.3, but python1.5.2 doesn't have this problem.

Hi, I'm a Python newbie, but I have some experience in other languages. I need to create about 100,000 instances of one class. Each instance has two lists, one usually empty, the other containing exactly 200 elements which differ widely between the 100,000 instances, but about half of the elements in these lists will be empty strings: ...

Hi, I've installed the latest docutils, but I can't find where the tools have been installed. I can see them when I expand the tarball, but I can't find them under site-packages. Thanks -Rim

Hi, i'm trying to compile a .py script using py2exe into a win .exe file. In that script i'm using xml.dom.minidom to parse an xml file (with the iso8859-1 encoding) i've included in the setup command line the --packages encodings but once i launch the exe file i receive this error in the console window: Traceback (most recent call last):...

Hi, First of all, I'm new in Python... I have worked with manu langs and IDEs, like Delphi, VB, JBuilder, Eclipse, Borland C++, Perl, etc... Then, today I think IDEs like Delphi have a excelent environment to develop apps with little time. I saw many people talking about Python like a easy lang to learn and to develop. But I have look...