I've written a buffer class that provides a File-like interface with read, write, seek, tell, flush methods to a simple string in memory. Of course it is incomplete (e.g. I didn't write readline). It's purpose is to be filled by a background thread from some external data source, but let a user treat it like a file. I'd expect it to cont...
Hello, I'm totally new to python, so hopefully someone can help if I'm doing something obviously wrong. I'm trying to create and run a simple pywikipedia bot on vocabularies.referata.com, a semantic mediawiki site. I downloaded the pywikipedia distro and created a family file: import config, family, urllib # REQUIRED class Fam...
I'm looking for a good FrameWork on which base my applications development. In PHP I use symfony, in ActionScript PureMVC, they are all MVC frameworks. I'm looking for a python framework being oriented to general purpose application development, not web application I mean, just applications, services, daemons and so on. Sometimes I hav...
I'm trying to add images to my models in my Django app. models.py class ImageMain(models.Model): """This is the Main Image of the product""" product = models.ForeignKey(Product) photo = models.ImageField(upload_to='products') In development mode, every time I try to upload the image via Django admin, I keep getting: Upload a...
I have a number of nodes in a network. The nodes send status information every hour to indicate that they are alive. So i have a list of Nodes and the time when they were last alive. I want to graph the number of alive nodes over the time. The list of nodes is sorted by the time they were last alive but i cant figure out a nice way to c...
I searched around for ways to make rose diagrams (circular histograms) in Google Chart. The API has only radar diagrams, so it seems not technically possible (am I correct?). This wind rose example was the closest I came to a solution. Because I needed them, I figured out a way to fake them quickly using the Radar plots, Python and the ...
The following code examines the behaviour of the float() method when fed a non-ascii symbol: import sys try: float(u'\xbd') except ValueError as e: print sys.getdefaultencoding() # in my system, this is 'ascii' print e[0].decode('latin-1') # u'invalid literal for float(): ' followed by the 1/2 (one half) character print unicode...
I have a python project with this directory structure and these files: /home/project_root |---__init__.py |---setup |---__init__.py |---configs.py |---test_code |---__init__.py |---tester.py The tester script imports from setup/configs.py with the reference "setup.configs". It runs fine on my development m...
Has anyone tried Solace yet? http://opensource.plurk.com/Solace/ "Solace is a fully open-sourced multilingual support and knowledge exchange platform written in Python." Just wanted to know your experience. Are there any other such platforms available in open source? ...
Is there a way to take text like below (if it was already in an array or a file) and have it strip the lines with a specified date range? For instance if i wanted every line from 2009-09-04 until 2009-09-09 to be pulled out (maybe this can be done with grep?) how would I go about doing so? date,test,time,avail 2009-09-01,JS,0.119,99....
Hello, I'm trying to come up with a method of finding duplicate addresses, based on a similarity score. Consider these duplicate addresses: addr_1 = '# 3 FAIRMONT LINK SOUTH' addr_2 = '3 FAIRMONT LINK S' addr_3 = '5703 - 48TH AVE' adrr_4 = '5703- 48 AVENUE' I'm planning on applying some string transformation to make long words abbrev...
What is the python keyword "with" used for? Example from: http://docs.python.org/tutorial/inputoutput.html >>> with open('/tmp/workfile', 'r') as f: ... read_data = f.read() >>> f.closed True ...
I am writing a class to implement an algorithm. This algorithm has three levels of complexity. It makes sense to me to implement the classes like this: class level0: def calc_algorithm(self): # level 0 algorithm pass # more level0 stuff class level1(level0): def calc_algorithm(self): # level 1 alg...
Hi guys, I would like to know how to show an error message in the Django admin. I have a private user section on my site where the user can create requests using "points". A request takes 1 or 2 points from the user's account (depending on the two type of request), so if the account has 0 points the user cant make any requests... in the...
I am trying to grasp a bit more of buildout with this tutorial, but unlike a tutorial, it seems like a cut and paste of presentation slides. I don't have a really clear idea of what the purpose of buildout is, and how it positions itself with scons and setuptools. Would you be so kind to provide details on these issues? Thanks! ...
I'm in an introductory comp-sci class (after doing web programming for years) and became curious about how much speed I was gaining, if any, with my one-liners. for line in lines: numbers.append(eval(line.strip().split()[0])) So I wrote the same thing with painfully explicit assignments and ran them against each other. for line in ...
How would you query Picasa from a Google App Engine app? Data API or Url Fetch? What are the pros and cons of using either method? [Edit] I would like to be able to query a specific album in Picasa and list all the photos in it. Code examples to do this in python are much appreciated. ...
Directories listed in my .pth configuration file aren't appearing in sys.path. The contents of configuration file, named some_code_dirs.pth: /home/project Paths to the file: /usr/lib/python2.6/site-packages/some_code_dirs.pth /usr/lib/python2.6/some_code_dirs.pth Check on sys variables in the python interpreter: >>> print sys.pre...
Sphinx has a feature called automethod that extracts the documentation from a method's docstring and embeds that into the documentation. But it not only embeds the docstring, but also the method signature (name + arguments). How do I embed only the docstring (excluding the method signature)? ref: http://sphinx.pocoo.org/ext/autodoc.html...
This following is a snippet of Python code I found that solves a mathematical problem. What exactly is it doing? I wasn't too sure what to Google for. x, y = x + 3 * y, 4 * x + 1 * y Is this a special Python syntax? ...