how long a Str can be used in this python code segment?

Gary Herron gherron at islandtraining.com
Mon Feb 1 10:29:20 CET 2010


Stephen.Wu wrote:
> tmp=file.read() (very huge file)
> if targetStr in tmp:
>     print "find it"
> else:
>     print "not find"
> file.close()
>
> I checked if file.read() is huge to some extend, it doesn't work, but
> could any give me some certain information on this prolbem?
>
>   

Python has no specific limit on string size other than memory size and 
perhaps 32 bit address space and so on.  However, if your file size is 
even a fraction of that size, you should not attempt to read it all into 
memory at once.  Is there not a way to process your file in batches of a 
reasonable size?

Gary Herron





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