python

How do I change my current directory from a python script?

I'm trying to implement my own version of the 'cd' command that presents the user with a list of hard-coded directories to choose from, and the user has to enter a number corresponding to an entry in the list. The program, named my_cd.py for now, should then effectively 'cd' the user to the chosen directory. Example of how this should wo...

Appengine Apps Vs Google bot web crawler

i built an appengine web app cricket.hover.in. The web app consists of about 15k url's linked in it, But even after a long time of my launch, no pages are indexed on google. Any base link place on my root site hover.in are being indexed with in minutes. but i placed the same link home page of root site a long back. but its of no use. c...

Python2.6 Decimal to Octal

How can i convert decimal to Octal in Python2.6, for 1 to 100000? I wanna get this converted result as .txt too. Can someone help me? ...

GUI IDE with PyDev Eclipse

I have 2 weeks to finish my final year project.I need a GUI IDE or a GUI framework compatible with PyDev and Eclipse. I cannot spend time learning something cause the functionality is yet to be completed.I'm looking for very simple GUI for a simulation game. ...

How can I configure vim syntax highlighting for mako templates?

I'd like to get the HTML elements highlighted as well as the MAKO / Python elements. Thanks. ...

What's the fastest way to convert a string of text into a url-safe variable?

I'd like to convert a string of text, e.g., "User Name" into something which I can turn into part of a url, e.g., "User-Name." What's the fastest way to do a string replacement ("-" for " ") as well as make sure that characters are only [a-zA-Z0-9]? ...

Python's safest method to store and retrieve passwords from a database.

Looking to store usernames and passwords in a database, and am wondering what the safest way to do so is. I know I have to use a salt somewhere, but am not sure how to generate it securely or how to apply it to encrypt the password. Some sample Python code would be greatly appreciated. Thanks. ...

Control links2 by python

Hi. Is there any way to control links browser from python? I need to make some bot, twill don't work on my page, Selenium need's X server. Maybe other way to do it? ...

Using zc.buildout, how do I install a tarball from a website?

I'm trying to get zc.buildout to install Gunicorn from source. Using the following configuration: [gunicorn] recipe = collective.recipe.distutils url = http://github.com/benoitc/gunicorn/tarball/master results in the following error: SystemError: ('Failed', '"/usr/bin/python" setup.py -q install --install- purelib="/mnt/hgfs/Project...

Referencing other modules in atexit

I have a function that is responsible for killing a child process when the program ends: class MySingleton: def __init__(self): import atexit atexit.register(self.stop) def stop(self): os.kill(self.sel_server_pid, signal.SIGTERM) However I get an error message when this function is called: Traceback (...

Django ORM: Ordering w/ aggregate functions — None special treatment

Hi, I'm doing query like that: SomeObject.objects.annotate(something=Avg('something')).order_by(something).all() Now, I normally have an aggregate field in my model that I use with Django signals to keep in sync, however in this case perfomance isn't an issue so I thought I'd keep it simple and just use subqueries. This approach, h...

Starting out NLP - Python + large data set

Hi, I've been wanting to learn python and do some NLP, so have finally gotten round to starting. Downloaded the english wikipedia mirror for a nice chunky dataset to start on, and have been playing around a bit, at this stage just getting some of it into a sqlite db (havent worked with dbs in the past unfort). But I'm guessing sqlite ...

Python's urllib2 don't work on some sites

I found that you can't read from some sites using Python's urllib2(or urllib). An example... urllib2.urlopen("http://www.dafont.com/").read() # Returns '' These sites works when you visit the site. I can even scrap them using PHP(didn't try other languages). I have seen other sites with the same issue - but can't remember the URL at t...

Natural language processing - Ideas for beginner's projects

Hi guys, I am a beginner in NLP and NLTK. I am very interested in NLP and hence joined a weekend course on AI in some local institution, which requires me to do a project for completion of the course, and I decided to do it in NLP. The problem is,the instructor is not good at all for this course (According to me she is just a charlatan)...

Returning a list in this recursive coi function in python.

Hello. I'm having trouble getting my list to return in my code. Instead of returning the list, it keeps returning None, but if I replace the return with print in the elif statement, it prints the list just fine. How can I repair this? def makeChange2(amount, coinDenomination, listofcoins = None): #makes a list of coins from an amoun...

Python Equivalent to phpinfo()

Quite simply, is there a python equivalent to php's phpinfo();? If so, what is it and how do I use it (a link to a reference page would work great). ...

Extract the SHA1 hash from a torrent file.

I've had a look around for the answer to this, but I only seem to be able to find software that does it for you. Does anybody know how to go about doing this in python? ...

Python lambda returning None instead of empty string

I have the following lambda function: f = lambda x: x == None and '' or x It should return an empty string if it receives None as the argument, or the argument if it's not None. For example: >>> f(4) 4 >>> f(None) >>> If I call f(None) instead of getting an empty string I get None. I printed the type of what the function returned ...

Return a list of imported Python modules used in a script?

Hi All, I am writing a program that categorizes a list of Python files by which modules they import. As such I need to scan the collection of .py files ad return a list of which modules they import. As an example, if one of the files I import has the following lines: import os import sys, gtk I would like it to return: ["os", "sys",...

Talking with a Bittorrent client listening on a port?

I have one of my computers seeding a torrent file on port 45000. I am trying to write a small client in python (or perhaps perl) that helps me to determine the types of messages this client supports for which I need to perhaps do a handshake with the client. In Azureus, this is done using a call like peer.getSupportedMessages(). Is it po...