the program doesn't launch

[dagolinuxoid]

I've got the error trying to launch the program

Traceback (most recent call last):
  File "./procexp.py", line 27, in <module>
    from PyQt5 import QtCore, QtGui, QtWidgets, uic
ModuleNotFoundError: No module named 'PyQt5'

Note
I do have the installed packages:
python-configobj is already the newest version (5.0.6-2).
python-qwt5-qt4 is already the newest version (5.2.1~cvs20091107+dfsg-8build1).

OS: ElementaryOS 5.1 Hera (basically it's an equivalent of ubuntu 18.04 kernel 5+)

[cmorgenstern]

Qt 4 support was removed in this commit.

You will need to install Qt 5. A quick Google search suggests that the updated Python Qwt module has not been packaged for Linux Mint yet, so you will probably need to manually compile it from here.