Using Python Stubs and Typeshed
Typeshed is a set of files with type annotations for the standard Python library and various packages. Typeshed stubs provide definitions for Python classes, functions, and modules defined with type hints. PyCharm uses this information for better code completion, inspections, and other code insight features.
PyCharm is switching to Typeshed, the common repository for Python stubs. The Typeshed stubs bundled with PyCharm are shown in the project view under the node External Libraries | <Python interpreter> | Typeshed Stubs. Note that PyCharm currently uses only a few of the bundled stubs (i.e. builtins.pyi, typing.pyi, and several others).
To override the bundled Typeshed repository with your own version, follow these steps:
The Python skeletons repository https://github.com/JetBrains/python-skeletons is now deprecated.