I'm currently coding in python on Visual Studio Code, and using tkinter. I am wondering about autocompletion for function arguments, e.g.: What is responsible for it? I can think of either tkinter, Visual Studio Code, or Pylance (which is mentioned in similar autocompletion windows). I found this from autocompletion: from typing extensions import Literal # Ellipses stand for other annotated parameters def pack_configure(self, ..., side: Literal['left', 'right', 'top', 'bottom'], ...): ... I would like to enable autocompletion for some function arguments. Is autocompletion caused by Literal? If so, is it a good practice to use it in my functions? Continue reading...