[Tutor] source code processing

[Dmitriy D.]

Could you please suggest some case-studies or tutorials concerning source code (preferred) or just plain text analyzing with python? 
I'm writing a script for retrieving comments from Delphi code and preparing documentation. Something like javadoc utility. I'm a newbie in Python and I'd like to see the way such tasks are usually done.

Thanks in advance!

Dmitriy.

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