Q:

Not full auto completion for WxPython in PyCharm Community Edition

In this example:
frame = wx.Frame(parent=None, title='Hello, World!')

Auto completion work for wx.Frame but don't work in parentheses. So when i'm write par it did't auto-complete for parent=.
I tried google it but didn't find answer.
I'm using PyCharm Community 2019.3 . Miniconda3 with Python 3.7.4 . wxpython 4.0.4

Could you please navigate to Frame definition by Right Click on it -
  Go To - Declaration or Usages. What parameters does its constructor
  have?

def __init__(self, *args, **kw):
        """
        Frame()
        Frame(parent, id=ID_ANY, title=EmptyString, pos=DefaultPosition, size=DefaultSize, style=DEFAULT_FRAME_STYLE, name=FrameNameStr)

        A frame is a window whose size and position can (usually) be changed
        by the user.
        """

It shows a \Miniconda3\Lib\site-packages\wx\core.pyi file with Frame class inside. 

A:

Since the C++ wxFrame constructor is overloaded then we need to use *args, **kw to be able to match either overload. However, the two overloads are given at the start of the docstring, so you can still get the info that way, and more details are present in the documentation at https://docs.wxpython.org/.
There are some plans to improve the code that is generated into the .pyi files, including using type hint annotations and the typing.overload decorator, but it may be awhile before that is done.

