5.19. Type Checking

5.19.1. mypy

• https://mypy-lang.org/

• https://github.com/python/mypy

$ pip install mypy
$ mypy FILE

setup.cfg

[mypy]
strict_optional = True

5.19.2. pyre-check

• https://pyre-check.org/

$ pip install pyre-check

5.19.3. pytypes