Am I doing this the python way? (list of lists + file io)

[bearophileHUGS at lycos.com]

R. David Murray:
> Given your description, I don't see any reason to prefer any alternate
> data structure.  1000 small CSV files should fit in a modern computer's
> memory with no problem...and if it does become an issue, worry about it
> then.

The OP can also try the "diff" command that can be found implemented
both on Linux and Windows.

Bye,
bearophile