Как сделать кнопку неактивной в pyqt?

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button = QPushButton("Click me")
button.setEnabled(False)

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self.pushButton.setEnabled(False)

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button.setEnabled(True)

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

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

    def initUI(self):
        self.setWindowTitle('Disable Button Example')

        self.button = QPushButton('Click me', self)
        self.button.setGeometry(50, 50, 100, 30)

        disable_button = QPushButton('Disable', self)
        disable_button.setGeometry(50, 100, 100, 30)
        disable_button.clicked.connect(self.disableButton)

        enable_button = QPushButton('Enable', self)
        enable_button.setGeometry(50, 150, 100, 30)
        enable_button.clicked.connect(self.enableButton)

    def disableButton(self):
        self.button.setEnabled(False)

    def enableButton(self):
        self.button.setEnabled(True)

if __name__ == '__main__':
    app = QApplication(sys.argv)
    widget = MyWidget()
    widget.show()
    sys.exit(app.exec_())