Mypy, Pytype, Pyright, and Pyre can help you keep your type-hinted Python code bug-free. Let’s see what each of these useful tools has to offer. In the beginning, Python had no type decorations.

With Python 3.5, type hints officially became part of the language (see PEP 484). Using a linter or code-checking tool, developers can check the consistency of variables and their types across a ...