Which Python library for file access to analyse and manipulate?
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For starters I'm going to make a program which analyses my poker hand histories which are stored automatically as text files. 

So which library do I need to snoop around in if I'm looking to analyse .txt files? I mean I can find some functions but I want to become more independent instead of googling a solution each time and actually learning things by myself...tell me if this is a stupid idea.

Thanks in advance.