Hashing tuples

[remow]

hash() is meant to be fast in order to implement hash-table-like algorithms.

Yes, I liked the fast part and glossed over collisions
Tomorrow I'll try to remove the str() hack and take hash-collisions into account, hoping it won't be too slow/use too much memory with the full dataset (that I still haven't tried with the str() hack, but now I am convinced that it won't work). But now I need sleep.

Thank you!