looking fo documentation for module files

[Skaperen]

the principle as i understand it is that minor version increments can add new things and using these new things in older (lower) minor versions is not expected to work correctly and is expected to work correctly in future (higher) versions. if Python has adopted this principle under terms of a limited time frame then that's OK. i assume that also means that beyond the time frame in the future, the new feature can be withdrawn.

a link not for Numpy but just for Python would be better. i not limiting what i do to just things that use Numpy.