LineEdit.py 文件源码

def init_ui(self):
        self.le = QtWidgets.QLineEdit()
        self.b1 = QtWidgets.QPushButton('Clear')
        self.b2 = QtWidgets.QPushButton('Print')

        v_box = QtWidgets.QVBoxLayout()
        v_box.addWidget(self.le)
        v_box.addWidget(self.b1)
        v_box.addWidget(self.b2)

        self.setLayout(v_box)
        self.setWindowTitle('PyQt5 Lesson 7')

        self.b1.clicked.connect(self.btn_clk)
        self.b2.clicked.connect(self.btn_clk)

        self.show()