好耶，pyqt是免費的!!!
https://www.google.com.tw/url?sa=t&source=web&rct=j&url=https://sourceforge.net/projects/pyqt/&ved=2ahUKEwjjr7aAipPZAhWFVZQKHXZ8ANoQFjAAegQIExAB&usg=AOvVaw2NY4k-xVu_K1Lh2i86kU5x