QObject信号与槽案例

import sys
from PySide2 import QtWidgets as qtw
from PySide2 import QtCore as qtc

def window_title_changed_slot(name):
    # 暂时屏蔽所有的信号，防止出现递归调用
    window.blockSignals(True)
    window.setWindowTitle('安静一键宏 - ' + name)
    # 解除信号屏蔽
    window.blockSignals(False)

app = qtw.QApplication()

window = qtw.QWidget(None)
window.resize(800, 800)
window.windowTitleChanged.connect(window_title_changed_slot)
# 触发信号，执行槽函数
window.setWindowTitle('猎人')

# 每次点击的时候print('点你咋地！')
btn = qtw.QPushButton(window)
btn.setText('点我')
btn.clicked.connect(lambda: print('点你咋地！'))

window.show()
sys.exit(app.exec_())