What's the appropriate built-in Exception to raise if your library is used with the wrong Python Version? -


i have simple library distributed .py file. raise exception if library called python 2 instead of python 3:

def _check_version():     if sys.version_info < (3,):         raise _____exception('this library depends on python 3 strings. please ensure using python 3 instead of python 2')

what built-in exception should raise? (how fill in blank above?) closest exception can find among builtin exceptions notimplementederror. deprecationwarning feels close, exception more appropriate in case.

i'd use runtimeerror this; there no more specific exception.


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