PyQt5管理一组按钮，而不必为每个单独的按钮编写用例

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

class ButtonGroup(QWidget):
    def __init__(self):
        super().__init__()
        self.initUI()

    def initUI(self):
        layout = QVBoxLayout()  # 创建垂直布局管理器

        # 创建按钮并添加到布局管理器中
        button1 = QPushButton('Button 1')
        layout.addWidget(button1)

        button2 = QPushButton('Button 2')
        layout.addWidget(button2)

        button3 = QPushButton('Button 3')
        layout.addWidget(button3)

        self.setLayout(layout)  # 将布局管理器设置为窗口的布局

        self.setWindowTitle('Button Group')
        self.show()

if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = ButtonGroup()
    sys.exit(app.exec_())