PyQt5基础学习-QGridLayout(栅格布局的计算器) 1.QGridLayout().addWidget(添加组件)

在栅格布局上构造计算器的按钮,

Calc.py 

"""
栅格布局: 实现计算器UI
"""

import sys, math
from PyQt5.QtWidgets import *

class Calc(QWidget):
    def __init__(self):
        super(Calc, self).__init__()
        self.setWindowTitle("栅格布局")
    
        grid = QGridLayout()
        self.setLayout(grid)

        names = ['Cls', 'Back', '', 'Close',
                 '7', '8', '9', '/',
                 '4', '5', '6', '*',
                 '1', '2', '3', '-',
                 '0', '.', '=', '+']
        positions = [(i, j) for i in range(5) for j in range(4)]
        print(positions)

        for position, name in zip(positions, names):
            if name == '':
                continue
            button = QPushButton(name)
            #*position,将元组分解开
            grid.addWidget(button, *position)


if __name__ == "__main__":
    app = QApplication(sys.argv)

    main = Calc()
    main.show()

    sys.exit(app.exec_())