Python Forum

I want to build up a long string piece by piece without the quadratic behavior of string concatenation. I'm looking at the {c,}StringIO modules as a way around this, but I don't see anything in the docs which talks about how they work. If I do s = StringIO.StringIO() while whatever: s.write (stringFragment) return s.getvalue()

I'm at my wits end with this silly thing. I'm new to python, so please excuse my impending ignorance ;). I am trying to execute a command, and get the output back into a string variable. Here's what I think should work from the docs I've read. The system I need to get this working on is 2000 professional, I'm posting this from my linux box,...

Hello. I'm having some trouble with getting the pyPgSQL module to work. I installed it and the mxDateTime module into my local directory (I'm doing this on my university's server and I don't have access to /usr). When I try to import it I get the following error: >>> from pyPgSql import libpq Traceback (most recent call last): File...

Pythonistas, My loyal fans :-) will remember that I did a Python IDE roundup for _Charming Python_ a couple years back. Now I have another such roundup lined up... not the very next article, but it's there on the list. In the intervening years, I've hardly touched anything one might call an IDE. I've looked at screenshots from time to...

Our project was developed with Python 2.0 and includes some Tk 8.3 extension widgets as well as python extensions using the CXX interface. After moving to Python 2.3 and TclTk 8.4 our program hangs with the following message: Fatal Python error: PyEval_RestoreThread: NULL tstate The strange thing is that this happens in a not very...

Thanks, Tony, we long term newbies need to stick together ;-)) I just updated a few PythonCard versions of three of the modules from askMerlin, and posted them in a link right below the askMerlin100.py command line program. The PythonCard version of election.py in particular is very easy and illustrates what these programs do. You will have...

I'm writing an authentication module for the albatross Web development system. I am taking the easy way out and implementing an authentication system designed by people who are hopefully more skilled with authentication systems than I. In the process of development, I discovered that pwd.getpwnam() is not fully functional in that I cannot...

This is the little warning to stdout which notes: ** (app1:989): WARNING **: could not find handler `on_...... I'd be grateful if anybody could tell me how to shut those off.

I was surprised that I couldn't find enough information out there to get this to work. Just enough to make a mess ;-). The code below just starts spitting out what I guess is postscript code, seperated by line feeds but not carrage returns, so they run right off the page. Certainly nothing graphical. .... printerName =...

Hi, here's a silly question. I'm wrote some code a while back that looks like this: import types class Named(object): def __init__(self,nm=''): self.iname = '' self.setnm(nm) def setnm (self,nm):

Hello, someone may have tackled this problem before but I have searched the google newsgroups up and down and I can't find anything on this. I am trying to write an embedded python program in C++ that will go out and execute python language in a script. I am using Visual C++ .NET, and I do have Multithreaded DLL(/MD) turned on for the...

Hi all, I've been using the canvas quite a bit lately, and I am wondering if I am just missing a quick trick somewhere. With most canvas objects you can bind then to mouse functions and quickly determine if you are selecting them. However, the rectangle (and I'm sure all other objects that aren't solid) only register if you actually hit...

Hi, How can I send a usenet posting from a python app? Thanks O:-)

Hi Folks, I'm a brand new Python programmer, so please point me in the right direction if this is not the best forum for this question.... I would like to open an existing MS Excel spreadsheet and extract information from specific worksheets and cells. I'm not really sure how to get started with this process. I ran the COM Makepy...

I know there's a PIL mailing list but I thought I would try the question here as well. I'm using PIL on Python 1.5.2 (stop laughing, it's what the ISP has for CGI and I don't have a choice) Anyway. I have a basic image and I need to overlay an image on top of it and let some of the basic image show through. Just as an aside the...

Hi, I am new to Python and excuse me if this problem is very trivial. The problem is like this. There is a directory (dirA) that contains files like mypacakge-2.2.5-15.rpm, mypacakge-2.2.5-90.rpm, anotherpackage-3.4.25.rpm etc.. As can be seen, some of the files are new versions of same rpm (mypacakge-2.2.5-15.rpm, mypacakge-2.2.5-90.rpm in...

Hi folks, I need to read information from a file. That is not the problem, BUT another programm (I have no control about that programm) constantly writes more information into that specific file. How can I get the new information that has bee added to that file and that I have not yet read? I don't want to re-read the entire file, because...

I have a problem, in that the following code is sometimes failing. I am stat'ing a list of files, but, sometimes, one of the files may be moved by an external process, after the os.path.exists and before the lstat, causing the script to fail. My question, is there anything I can do to speed it up, or put in a trap, to stop the stat from...

The next meeting of PyGTA will be held at the usual location and time, on Tuesday September 23. Site: 519 Church St. Community Centre Room no: 31 (signs will be posted) Address: 519 Church St., near Wellesley Date: Tuesday, September 23 Time: 8-10 PM A later announcement will provide details of any presentation which might

I am thinking of implementing a nice little source code generation program with empy. I'm planning on having one directory with arbitrary number of templates. Templates can contain a significator as follows: @%promptuser ('classname',"the name of the class",'string'),('i',"some number",'int') After choosing a template from the list, the...

Is there a simple way of causing the size of a canvas to change as the window is resized when using the Grid geometry manager? Setting sticky='NESW', as in the following code, doesn't work though the documentation for Grid seems to imply that it should: "sticky If a slave's cell is larger than its requested dimensions, this option may be...

Hallo, somehow Installer won't work, even on the simplest python file: test.py: --------- import time print 'time is', time.time()

Hi. Sorry if this is really dim, but I'm trying to do something like: main (args): fhand=open(args,"r+") and get an error that open is expecting a string not a list. I _have_ looked at the docs online, and in the books, but to no avail, so thanks for looking!

Hi! I have a strange problem: I wrote a program in python, and I get an error: ImportError: dynamic module does not define init function (initESSClientAPI) but only if I run the program in certain folders. The same program runs without any error from other folders. Any ideas? Thanks

Hello, weave could be highly usefull to me, but I can't have it work correctly on my PC, and I can't understand the error message. Could you help me ? I installed the latest zip package by "python setup.py install", on a python 2.3 installation (OS = Windows ME), and here is a result when trying it : ========================= IDLE 1.0...