布局管理——网格布局

网格布局是最通用的布局类，它将空间划分为行和列。

示例效果如下：

示例代码：

#!/usr/bin/python3
# -*- coding: utf-8 -*-

"""
ZetCode PyQt5 tutorial

In this example, we create a skeleton
of a calculator using QGridLayout.

Author: Jan Bodnar
Website: zetcode.com
Last edited: August 2017
"""

import sys
from PyQt5.QtWidgets import (QWidget, QGridLayout,
    QPushButton, QApplication)


class Example(QWidget):

    def __init__(self):
        super().__init__()

        self.initUI()

    def initUI(self):

        grid = QGridLayout()
        self.setLayout(grid)

        names = ['Cls', 'Bck', '', 'Close',
                 '7', '8', '9', '/',
                '4', '5', '6', '*',
                 '1', '2', '3', '-',
                '0', '.', '=', '+']

        positions = [(i, j) for i in range(5) for j in range(4)]

        for position, name in zip(positions, names):

            if name == '':
                continue
            button = QPushButton(name)
            grid.addWidget(button, *position)

        self.move(300, 150)
        self.setWindowTitle('Calculator')
        self.show()


if __name__ == '__main__':

    app = QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())