Source Codes: https://codeloop.org/category/pyqt5/ PyQt5 signals and slots Graphical applications (GUI) are event-driven, unlike console or terminal applications. A users action like clicks a button or selecting an item in a list is called an event. If an event takes place, each PyQt5 widget can emit a signal. A signal does not execute any action, that is done by a slot.
8 PyQt5 Signal And Slots Basics Part 2 Pyhton GUI Programming