Check for a minimum required Python version

You can check for the Python version in your code, to make sure your users are not running your script with an incompatible version. Use this simple check:

if not sys.version_info > (2, 7):
   # berate your user for running a 10 year
   # python version
elif not sys.version_info >= (3, 5):
   # Kindly tell your user (s)he needs to upgrade
   # because you're using 3.5 features