GUI written in python (with PyQT/PySide2) does not launch

1. How do I open PySide2?
2. Should I use PySide2 or PyQt5?
3. How do I import a PyQt5 .UI file into a python GUI?
4. How do I use PyQt?

How do I open PySide2?

It's actually quite easy, just open a console and type the following: python -m pip install PySide2.

Should I use PySide2 or PyQt5?

The key difference in the two versions — in fact the entire reason PySide2 exists — is licensing. PyQt5 is available under a GPL or commercial license, and PySide2 under a LGPL license. ... The LGPL license does not require you to share the source code of your own applications, even if they are bundled with PySide2.

How do I import a PyQt5 .UI file into a python GUI?

First we need to import the modules required. We need QtWidgets from PyQt5 for the base widget and uic from PyQt5 also to load the file. We also need sys to access arguments.
...
A small check-list for things that may go wrong:

1. PyQt5 isn't installed.
2. The . ...
3. You did not inherit the correct class (found in the XML)

How do I use PyQt?

Creating Your First PyQt Application

1. Import QApplication and all the required widgets from PyQt5. QtWidgets .
2. Create an instance of QApplication .
3. Create an instance of your application's GUI.
4. Show your application's GUI.
5. Run your application's event loop (or main loop).