hash() returning different values on different OSs

Question

When python builtin hash() is just wired cross-platform. I have an app use builtin hash() for 'test'. Both systems are 64bit, python 2.7.12

windows:

>>> hash('test')
1308370872

linux:

>>> hash('test')
2314058222102390712

Why is this?

Answer 1

There are no guarantees about the value hash returns in Python. It appears that you're using a 32-bit Windows Python (that's a guess), and that you're using a 64-bit python on linux (again, a guess). IIRC (and I haven't checked), The default hash(item) returns the address of item as its hash value.

If you want to have values you can compare across operating systems, look at hashlib.