Check type hints

[suzannejin]

Python don't check the type hints at runtime. They are there simply for cleaner code.
However, there is a package that allows the checking of the declared type hints.

Example:

from typeguard import typechecked

@typechecked
def function1(sequence: str):
   ...

This does not improve performance like cPython does when declaring argument types.
However, it can be useful to make necessary checks to ensure our code will get the correct inputs.