Cygwin and Python3

[Fillmore]

Hi, I am having a hard time making my Cygwin run Python 3.5 (or Python 2.7 for that matter).
The command will hang and nothing happens.

A cursory search on the net reveals many possibilities, which might mean a lot
of trial and error, which I would very much like to avoid.

Any suggestions on how I can get cygwin and Python3.5 to play together like brother and sister?

thanks