• View
• Edit
• History
• Print

PythonProgramming

Don't reinvent the wheel. Use the standard python modules if they can do the job for you.

• http://manatee.mojam.com/~skip/python/fastpython.html
• http://www.thinkware.se/cgi-bin/thinki.cgi/PythonPerformance
• http://www.razorvine.net/python/PythonSpeed

Python performance

 d = {'a': 1}

Do this:

 if 'b' in d:

and not

 if d.has_key('b')

It is 30% faster and recommended at http://www.python.org/peps/pep-0290.html

I read somewhere that method local variables are faster than self.name variables. Have to benchmark python 2.3 and 2.4 to see.

Do always catch a specific exception. Don't do like this unless you know what you are doing:

 try:
   something
 except:
   cleanup

This might be ok:

 try:
   something
 except:
   raise OtherException(blabla)