That is:
'python' is in $PATH => it is Python 2
By my reading, it follows that if there is no Python 2, 'python' shouldn't be in $PATH at all, according to that PEP.
That is:
'python' is in $PATH => it is Python 2
By my reading, it follows that if there is no Python 2, 'python' shouldn't be in $PATH at all, according to that PEP.