Qt Designer is a complete design (Push Button 16 is substantially one and lineEdit, plus resizing and simple layout)
After the design is saved as name.ui (such as calculator.ui), open cmd, cd to name.ui the folder, execute the following code: pyuic5 -o name.py name.ui, generate name.py
Open name.py (such Spyder), new main.py, execute the following code
import sys from PyQt5.QtWidgets import QApplication, QMainWindow from calculator import Ui_MainWindow class Calcu(QMainWindow, Ui_MainWindow): def __init__(self): super().__init__() self.setupUi(self) self.connection() self.show() def num_0(self): self.lineEdit.insert('0') def num_1(self): self.lineEdit.insert('1') def num_2(self): self.lineEdit.insert('2') def num_3(self): self.lineEdit.insert('3') def num_4(self): self.lineEdit.insert('4') def num_5(self): self.lineEdit.insert('5') def num_6(self): self.lineEdit.insert('6') def num_7(self): self.lineEdit.insert('7') def num_8(self): self.lineEdit.insert('8') def num_9(self): self.lineEdit.insert('9') def op_plus(self): self.lineEdit.insert('+') def op_minus(self): self.lineEdit.insert('-') def op_multiply(self): self.lineEdit.insert('*') def op_divide(self): self.lineEdit.insert('/') def op_ce(self): self.lineEdit.clear() def calculate(self): text = self.lineEdit.text() try: self.lineEdit.setText(str(eval(text))) except: self.lineEdit.setText('invalid syntax, check your input!') def connection(self): self.Num_0.clicked.connect(self.num_0) self.Num_1.clicked.connect(self.num_1) self.Num_2.clicked.connect(self.num_2) self.Num_3.clicked.connect(self.num_3) self.Num_4.clicked.connect(self.num_4) self.Num_5.clicked.connect(self.num_5) self.Num_6.clicked.connect(self.num_6) self.Num_7.clicked.connect(self.num_7) self.Num_8.clicked.connect(self.num_8) self.Num_9.clicked.connect(self.num_9) self.OP_plus.clicked.connect(self.op_plus) self.OP_minus.clicked.connect(self.op_minus) self.OP_multiply.clicked.connect(self.op_multiply) self.OP_divide.clicked.connect(self.op_divide) self.OP_CE.clicked.connect(self.op_ce) self.OP_equal.clicked.connect(self.calculate) if __name__ == '__main__': app = QApplication(sys.argv) ca = Calcu() sys.exit(app.exec_())
The results are as follows:
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