any objections to change all shebangs (that do not match
/usr/bin/python\d(\.\d+) but do math .+python.* regexp) to
/usr/bin/python¹ in dh_python2 and to /usr/bin/python3 in
dh_python3?
dh_python2 would change "/usr/bin/env python3" to "/usr/bin/python";
dh_python3 would change "/usr/bin/env python" to "/usr/bin/python3".
No, thank you, that's wrong.
dh_python2 and dh_python3 cannot be used for the same files at the same
time (that's why dh_python2 igores python3-* packages, that's why
dh_python3 ignores python-* packages and that's why you have to use
-N/-p in all other packages if you want to invoke both helpers)