The new update to the VS Code Python extension also improves Pylance functionality, specifically related to how it displays signature help when a developer invokes a function with multiple overrides. ...

Immutability Another tenet of functional programming philosophy is not to modify data outside the function. In practice, this means to avoid modifying the input arguments to a function.

Take advantage of caching and the lru_cache decorator to relieve your Python functions from repetitive heavy lifting.