IntelliSens code for picking up parameter in method in Pycharm is missing

Hi 

I code program with python  using Pycharm

but I found this problem about  Intellisense for picking up parameter in a method in Pycharm code editor in many times.

Code editor in Pycharm is unable to look up parameter name in method while I am coding

It seems uncomfortable like coding with VS code.

How to fix them?

Pongthorn