PyQt5 pushButton clicked 点击事件绑定

说明：文章主要演示在PyQt5中如何对Button进行事件绑定，以及执行相应的操作。

演示代码复制可用。

import sys
from PyQt5 import QtWidgets


class ClassPushButtonClicked(QtWidgets.QWidget):

    def __init__(self):
        super(ClassPushButtonClicked, self).__init__()
        self.init_ui()
        self.bind_trigger()

    def init_ui(self):
        """Init default ui"""
        self.setGeometry(300, 300, 300, 220)
        self.setWindowTitle("PushButtonClicked")

        button = QtWidgets.QPushButton(text="pushButton", parent=self)
        button.setToolTip("Test pushButton!")
        button_default_size = button.sizeHint()
        button.setGeometry(100, 100, 100, 35)
        self.button = button

        label = QtWidgets.QLabel(text="label", parent=self)
        label.setText("Button default size: " + str(button_default_size))
        label.setGeometry(10, 180, 200, 35)
        self.label = label

    def bind_trigger(self):
        # Button clicked trigger
        self.button.clicked.connect(self.clicked_button)

    def clicked_button(self):
        self.label.setText("<b style='color:red'>Button has been clicked!</b>")


if __name__ == '__main__':
    app = QtWidgets.QApplication(sys.argv)
    push_button_clicked = ClassPushButtonClicked()
    push_button_clicked.show()
    sys.exit(app.exec_())