A common task in programs I've been working on lately is modifying a text file in some way. (Hey, I'm on Linux. Everything's a file. And I do large-scale system admin.) But the file the code modifies may not exist on my desktop box. And I probably don't want to modify it if it IS on my desktop. I've read about unit testing in Dive Into...
I'm trying to write a console (as in terminal, not gaming console) pong game in python and I'm having trouble figuring how best to (re)draw the game. I was thinking of having an 2d array as a sort of bitmap, editing the array to reflect the ball/paddles new positions and then casting each row to a string and printing it. However that me...
I'm used to the Java model where you can have one public class per file. Python doesn't have this restriction, and I'm wondering what's the best practice for organising classes. ...
So what I'm trying to do here is get the headers of a given URL so I can determine the mime-type. I want to be able to see if http://somedomain/foo/ will return an html document or a jpg image for example. Thus, I need to figure out how to send a HEAD request so that I can read the mime-type without having to download the content. Does a...
So the official XML-RPC standard doesn't support 64-bit values. But in these modern times, 64-bit values are increasingly common. How do you handle these? What XML-RPC extensions are the most common? What language bindings are there? I'm especially interested in Python and C++, but all information is appreciated. ...
I'd like to unit test responses from the Google App Engine webapp.WSGIApplication, for example request the url '/' and test that the responses status code is 200, using GAEUnit. How can I do this? I'd like to use the webapp framework and GAEUnit, which runs within the App Engine sandbox (unfortunately WebTest does not work within the s...
Is output buffering enabled by default in Python's interpreter for sys.stdout ? If the answer is positive, what are all the ways to disable it ? Suggestions so far: Use the -u command line switch Wrap sys.stdout in an object that flushes after every write Set PYTHONUNBUFFERED env var sys.stdout = os.fdopen(sys.stdout.fileno(), 'w', ...
I'm writing a C parser using PLY, and recently ran into a problem. This code: typedef int my_type; my_type x; Is correct C code, because my_type is defined as a type previously to being used as such. I handle it by filling a type symbol table in the parser that gets used by the lexer to differentiate between types and simple identifie...
hi , i am using pyexcelerator python module to generate excel files, i want to apply bold style to part of cell text, but not to the whole cell. how to do it ? ...
class Tag(models.Model): name = models.CharField(maxlength=100) class Blog(models.Model): name = models.CharField(maxlength=100) tags = models.ManyToManyField(Tag) Simple models just to ask my question. I wonder how can i query blogs using tags in two different ways. Blog entries that are tagged with "tag1" or "tag2": Blog.o...
I've been using a small class to emulate Enums in some Python projects. Is there a better way or does this make the most sense for some situations? Class code here: class Enum(object): '''Simple Enum Class Example Usage: >>> codes = Enum('FOO BAR BAZ') # codes.BAZ will be 2 and so on ...''' def __init__(self, names): for number, na...
Data: a dependency list, already verified to be acyclic. So here, 'a' depends on 'b','c','d' (c depends on d), etc... A = { 'a' : dict(b=1, c=1), 'c' : dict(d=1), 'd' : dict(e=1,f=1,g=1), 'h' : dict(j=1) } I'd like to have a top-down, recursive solution to let's say, find the chain starting at 'a': a, c, d, e, g...
I would like to wipe out all data for a specific kind in Google App Engine. What is the best way to do this? I wrote a delete script (hack), but since there is so much data is timeout's out after a few hundred records. ...
I'm looking at writing a little drum machine in Python for fun. I've googled some and found the python pages on music and basic audio as well as a StackOverflow question on generating audio files, but what I'm looking for is a decent library for music creation. Has anyone on here tried to do something like this before? If so, what was...
Basically, growl notifications (or other callbacks) when tests break or pass. Does anything like this exist? If not, it should be pretty easy to write.. Easiest way would be to.. run python-autotest myfile1.py myfile2.py etc.py Check if files-to-be-monitored have been modified (possibly just if they've been saved). Run any tests in th...
Is there a built-in method in Python to get an array of all a class' instance variables? For example, if I have this code: class hi: def __init__(self): self.ii = "foo" self.kk = "bar" Is there a way for me to do this: >>> mystery_method(hi) ["ii", "kk"] Thanks guys! Edit: I originally had asked for class variables erron...
The following program is very simple: it outputs a single dot each half a second. If it recieves a SIGQUIT, it proceeds to output ten Qs. If it recieves a SIGTSTP (Ctrl-Z), it outputs ten Zs. If it recieves a SIGTSTP while printing Qs, it will print ten Zs after it's done with the ten Qs. This is a good thing. However, if it recieves a...
Looking to do a very small, quick 'n dirty side project. I like the fact that the Google App Engine is running on Python with Django built right in - gives me an excuse to try that platform... but my question is this: Has anyone made use of the app engine for anything other than a toy problem? I see some good example apps out there, so ...
I want to know the memory usage of my Python application and specifically want to know what code blocks/portions or objects are consuming most memory. Google search shows a commercial one is Python Memory Validator. And open source ones are PySizer and Heapy. I haven't tried anyone, so I wanted to know which one is the best considering...
As the title says how can I find the current OS in python? ...