import sys
from PyQt5.QtWidgets import QApplication, QWidget, QPushButton, QMessageBox

class MyWindow(QWidget):
    def __init__(self):
        super().__init__()

        self.setWindowTitle("PyQt5 简单示例")
        self.setGeometry(100, 100, 300, 200)

        self.button = QPushButton("点我一下", self)
        self.button.setGeometry(100, 80, 100, 30)
        self.button.clicked.connect(self.show_message)

    def show_message(self):
        QMessageBox.information(self, "提示", "按钮被点击了！")

if __name__ == "__main__":
    app = QApplication(sys.argv)
    window = MyWindow()
    window.show()
    sys.exit(app.exec_())
    """
    pyinstaller qt5_demo.py --hidden-import PySide2.QtXml
    """