为窗口设置图标

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import sys from PyQt5.QtGui import QIcon from PyQt5.QtWidgets import QWidget, QApplication   #  创建一个Icon类，继承Qwidget类 class Icon(QWidget):     def __init__(self):         super().__init__()         self.initUI()         # 初始化窗口     def initUI(self):         self.setGeometry(300, 300, 250, 150)         self.setWindowTitle('程序图标')         self.setWindowIcon(QIcon('1.ico'))   if __name__ == '__main__':     app = QApplication(sys.argv)     icon = Icon()     icon.show()     sys.exit(app.exec())