How to port code from PySide to Pyside2/PyQt?

Question

Python

Hey!
I found this story on github - https://github.com/vinay-nagarajan/Steganography--... I
created a project, made myself 3 files of the same name and copied the code, but I got errors when starting

File "D:/PyCharm Community Edition/projet/testStega/SteganographyConsumer.py", line 4, in <module>
   <b> from SteganographyGUI import *</b>
  File "D:\PyCharm Community Edition\projet\testStega\SteganographyGUI.py", line 10, in <module>
   <b> from PySide import QtCore, QtGui</b>
ModuleNotFoundError: No module named 'PySide'

I tried to install `PySide` but it didn't work because of the new version, but I found an alternative - PySide2. Adding the number 2 to `PySide` everywhere caught the following error:

File"path/SteganographyConsumer.py", line 12, in <module>
    class SteganographyConsumer(<b>QMainWindow</b>, Ui_MainWindow):
NameError: name 'QMainWindow' is not defined

And now I couldn't "fix" it.
Actually, how to make this code work in the changed conditions (PySide2)?