How to fix this warning of wxPyDeprecationWarning in wxPython module?

Question

a deprecating warning in wxPython lib is as follows: wxPyDeprecationWarning: wx.lib.pubsub has been deprecated, plese migrate your code to use pypubsub, available on PyPI.

python 3.7.2 and pycharm IDE

Answer 1

Simply change references to wx.lib.pubsub to pubsub
So for example:

# Changing the following line
#from wx.lib.pubsub import pub

# to the line below is all that is required
from pubsub import pub

Answer 2

wx.lib.pubsub is now deprecated in wxPython. You will need to install PyPubSub now. The PyPubSub package is actually what wx.lib.pubsub was based on, so the implementation will be almost the same. You can read its documentation here.

To install PyPubSub, use pip:

 pip install PyPubSub

Then replace from wx.lib.pubsub import pub with from pubsub import pub.