Turn shutil into a runnable module

Ideas
21

I don’t see any of those problems as big as trying to guess is 42 a number or a string in an environment where you cannot reliably use quotes. More precisely,

  • type hints can be added and they have also other benefits,
  • unions can be handled by trying conversion with all types in the specified order (e.g. with int | float try integer conversion first and if it fails try float), and
  • ABCs can be handled by converting to concrete classes (e.g. with Mapping convert to dict).