typing — Support for type hints [1]. They are used by tools like mypy, not at runtime (by CPython at least), but still very useful. [1]: https://docs.python.o

typing — Support for type hints [1]. They are used by tools like mypy, not at runtime (by CPython at least), but still very useful. [1]: https://docs.python.org/3/library/typing.html https://docs.python.org/3/library/typing.html