Python(PyQt5) how to make windows within a window?

Question

Python

Good afternoon. I'm learning Python. I am already studying the second textbook. there is a tutorial on how to use PyQt5 to create a user interface. In parallel with the study, I develop little things for myself, but everything in the textbook is only one-window.
I tried to find in the tutorial how to make windows in a window, there is nothing. I tried to google, nothing comes out either, apparently I don’t know the correct term for what I want.
How to do this? https://doc.qt.io/qt-5/qtwidgets-mainwindows-mainw...
i.e. window, it has a menu, toolbar, and other windows.

Answer 1

PyQt - QDock Widget
QDockWidget