It also seems like all of the changes in Python are all changes that Perl5 has done over the years without breaking backwards compatibility. Unfortunately this does mean you often have to opt-in to the new functionality.

    use v5.24;
    use feature 'unicode_strings';
    use feature 'fc';
    use feature 'postderef';

    …

Note that the `'postderef'` feature is now always enabled so that line is pointless if you use a new enough version of Perl5. The `'unicode_strings'` also isn't always necessary.