Hi, I'm using windows and linux machines for the same project. The default encoding for stdin on windows is cp1252 and on linux is utf-8. I would like to change everything to uft-8. Is it possible? How can I do it? Thanks Eduardo ...
I've been trying to apply an algorithm to reduce a python list into a smaller one based on a certain criteria. Due to the large volume of the original list, in the order of 100k elements, I tried to itertools for avoiding multiple memory allocations so I came up with this: reducedVec = [ 'F' if sum( 1 for x in islice(vec, i, i+ratio) if...
I have blog comment forms in Django and I would like to know the following: Should I add CSRF to the forms? If I want to use the simple "render_comment_form" method, how do I add it? If I can't add it like that, what is the best practice for doing it? Each tutorial or discussion on the subject seems to have a different approach, and ...
I have a list of tuples the looks similar to this (simplified here, there are over 14,000 of these tuples with more complicated paths than Obj.part) [ (Obj1.part1, {<SPEC>}), (Obj1.partN, {<SPEC>}), (ObjK.partN, {<SPEC>}) ] Where Obj goes from 1 - 1000, part from 0 - 2000. These "keys" all have a dictionary of specs associated with th...
Is there a general convention about exposing members in Python classes? I know that this is a case of "it depends", but maybe there is a rule of thumb. Private member: class Node: def __init__(self): self.__children = [] def add_children(self, *args): self.__children += args node = Node() node.add_children("one", "two") ...
My data_site.wsgi file: import main application = application() Error i get at apache: [Thu Apr 29 07:07:41 2010] [error] [client 81.167.201.136] Traceback (most recent call last): [Thu Apr 29 07:07:41 2010] [error] [client 81.167.201.136] File "/var/www/vhosts/data.oddprojects.net/htdocs/data_site.wsgi", line 1, in <module> [Thu A...
Hi guys i have a python script, that submits an job to the SGE (Sun Grid Engine). When the job is done i want to access the output file, generated from the SGE job. i see with "ls" in the directory that the file is already existing and the job is done, but python needs about 20-30 seconds to get access to that file... is there a way to ...
I tried to run the following code from http://docs.python.org/library/mmap.html import mmap # write a simple example file with open("hello.txt", "wb") as f: f.write("Hello Python!\n") with open("hello.txt", "r+b") as f: # memory-map the file, size 0 means whole file map = mmap.mmap(f.fileno(), 0) # read content via st...
I'm using Python and I want to use regular expressions to check if something "is part of an include list" but "is not part of an exclude list". My include list is represented by a regex, for example: And.* Everything which starts with And. Also the exclude list is represented by a regex, for example: (?!Andrea) Everything, but no...
with open("hello.txt", "wb") as f: f.write("Hello Python!\n") seems to be the same as f = open("hello.txt", "wb") f.write("Hello Python!\n") f.close() What's the advantage of using open .. as instead of f = ? Is it just syntactic sugar? Just saving one line of code? ...
I'm trying to use the TMP environment variable in a program. When I ask for tmp = os.path.expandvars("$TMP") I get C:\Users\STEVE~1.COO\AppData\Local\Temp Which contains the old-school, tilde form. A function I have no control over returns paths like C:\Users\steve.cooper\AppData\Local\Temp\file.txt My problem is this; I'd lik...
I'm writing some unit tests for a Django project, and I was wondering if its possible (or necessary?) to test some of the decorators that I wrote for it. Here is an example of a decorator that I wrote: class login_required(object): def __init__(self, f): self.f = f def __call__(self, *args): request = args[0...
In UNIX you can assign the output of a script to an environment variable using the technique explained here - but what is the Windows equivalent? I have a python utility which is intended to correct an environment variable. This script simply writes a sequence of chars to stdout. For the purposes of this question, the fact that my utili...
I have a list of strings and a list of filters (which are also strings, to be interpreted as regular expressions). I want a list of all the elements in my string list that are accepted by at least one of the filters. Ideally, I'd write [s for s in strings if some (lambda f: re.match (f, s), filters)] where some is defined as def so...
This code works well in Mac/Linux, but not in Windows. import mmap import os map = mmap.mmap(-1, 13) map.write("Hello world!") pid = os.fork() if pid == 0: # In a child process print 'child' map.seek(0) print map.readline() map.close() else: print 'parent' What's the equivalent function of os.fork() on Window...
I have a working Python 2.6 install and just installed the PyQt4 built for Python 2.6 (available at http://www.riverbankcomputing.co.uk/software/pyqt/download). When I try to import PyQt4.QtGui I get the following error: ImportError: DLL load failed: The specified procedure could not be found. I'm on Windows 2k8 64-bit, but my Python ...
I understand that in Python a string is simply an expression and a string by itself would be garbage collected immediately upon return of control to a code's caller, but... Large class/method doc strings in your code: do they waste memory by building the string objects up? Module level doc strings: are they stored infinitely by the int...
I want to use Python's multiprocessing to do concurrent processing without using locks (locks to me are the opposite of multiprocessing) because I want to build up multiple reports from different resources at the exact same time during a web request (normally takes about 3 seconds but with multiprocessing I can do it in .5 seconds). My ...
Hi everyone, How can retrieve the 2 highest item from a list containing 100 000 integers. You do understand without having to sort the entire list. ...
I have a Linux box and I want to be able to telnet into it (port 77557) and run few required commands without having to access to the whole Linux box. So, I have a server listening on that port, and echos the entered command on the screen. (for now) Telnet 192.168.1.100 77557 Trying 192.168.1.100... Connected to 192.168.1....