5.1. Type Checking

5.1.1. MyPy

• https://mypy-lang.org/

• https://github.com/python/mypy

$ pip install mypy
$ mypy FILE

setup.cfg

[mypy]
strict_optional = True

5.1.2. PyType

• https://github.com/google/pytype

$ pip install pytype
$ pytype -V 3.7 FILE

5.1.3. pyre-check