Note, Python's hash function is a very bad hash function. It usually maps sequential values (i.e. 1,2,3 ..) to sequential hash values (i.e. 1,2 3 ...) - yes, hash(1) = 1. The advantage of this is, if you have sequential keys (which is very common), you minimize collisions better than more "random" distributions.

Of course, you couldn't use it for cryptography.