Python module error using Externalsession

Question

What I am trying to do is to generate an array using Python inside Mathematica but I getting TypeError required field:type_ignores missing Module.
Here is the image:

And then I check if the session is available with the 2+2.

Ioannis Mourginakis · Accepted Answer

You're probably using Python 3.8:

Here's the fix that worked for me, although I still have to call the python from ExternalEvaluate[]:

open
C:Program FilesWolfram ResearchMathematica12.0SystemFilesLinksWolframClientForPythonwolframclientutilsexternalevaluate.py

Go to line 66

replace
exec(compile(ast.Module(expressions), '', 'exec'), current)

with 
exec(compile(ast.Module(expressions, []), '', 'exec'), current)

Referenced from:
https://gist.github.com/Riebart/7622c17237a6ddb2516fd09ea67307ff

Python module error using Externalsession

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