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Type hints cheat sheet¶ This document is a quick cheat sheet showing how to use type annotations for various common types in Python. Variables¶ Technically many of the type annotations shown below are redundant, since mypy can usually infer the type of a variable from its value. See Type inference and type annotations for more details. # This is how you declare the type of a variable age: int = 1

Welcome to mypy documentation!¶ Mypy is a static type checker for Python. Type checkers help ensure that you’re using variables and functions in your code correctly. With mypy, add type hints (PEP 484) to your Python programs, and mypy will warn you when you use those types incorrectly. Python is a dynamic language, so usually you’ll only see errors in your code when you attempt to run it. Mypy is