I wish Python had come with some equivalent to the "BEGIN {}" blocks that Perl and Awk have.
Lacking that, there's no way to write a (single file) script where a Python 2 interpreter would just get a "You need Python 3" error instead of a syntax error. Because testing for the interpreter version happens too late...after the syntax error already happened.
Perl's "BEGIN {}" block lets you easily test for versions or language features before the script itself is parsed.
Lacking that, there's no way to write a (single file) script where a Python 2 interpreter would just get a "You need Python 3" error instead of a syntax error. Because testing for the interpreter version happens too late...after the syntax error already happened.
Perl's "BEGIN {}" block lets you easily test for versions or language features before the script itself is parsed.