How to build a GUI with PyQt

PyQt is a Python binding for the Qt application framework, enabling developers to create cross-platform GUI applications using Python. Developed by Riverbank Computing, PyQt is available under both GPL v3 and a commercial license, with its latest version being PyQt6. However, the article focuses on using PyQt5, which requires Python v3.5 or later. PyQt simplifies GUI development by providing access to Qt's comprehensive API and supports various widgets and layouts such as horizontal, vertical, grid, and form layouts. It emphasizes the event-driven nature of GUI applications, utilizing signals and slots to handle user interactions like button clicks. The QMainWindow class is recommended for managing the main window, offering layouts for adding menu bars and other features. For more intuitive development, PyQt can be combined with the Qt Designer drag-and-drop interface. While PyQt documentation has gaps, the Qt documentation, although C++-oriented, can be a helpful resource alongside older versions' documentation.