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PyQt5布局有两种方式，绝对定位和布局类

import sysfrom PyQt5.QtWidgets import QWidget, QLabel, QApplicationclass Example(QWidget):    def __init__(self):        super().__init__()        self.initUI()    def initUI(self):        lbl1 = QLabel('Zetcode', self)        lbl1.move(15, 10)        lbl2 = QLabel('tutorials', self)        lbl2.move(15, 70)		#绝对位置(35, 10)        lbl3 = QLabel('for programmers', self)        lbl3.move(70, 70)		#设置窗口位置和大小        self.setGeometry(300, 300, 250, 150)        self.setWindowTitle('Absolute Positioning')        self.show()if __name__ == '__main__':    app = QApplication(sys.argv)    execute = Example()    sys.exit(app.exec_())

import sysfrom PyQt5.QtWidgets import QWidget, QLabel, QApplicationimport sysfrom PyQt5.QtWidgets import (QWidget, QPushButton,                             QHBoxLayout, QVBoxLayout, QApplication)class Example(QWidget):    def __init__(self):        super().__init__()        self.initUI()    def initUI(self):        okButton = QPushButton("OK1")        cancelButton = QPushButton("Cancel")        okButton1 = QPushButton("OK2")        cancelButton1 = QPushButton("Cance2")        hbox1 = QHBoxLayout()        #添加横向伸展因子，靠右显示        hbox1.addStretch(1)        hbox1.addWidget(okButton)        hbox1.addWidget(cancelButton)        hbox2 = QHBoxLayout()        #hbox2.addStretch(1)        hbox2.addWidget(okButton1)        hbox2.addWidget(cancelButton1)        vbox = QVBoxLayout()       #添加纵向伸展因子，靠底部显示        vbox.addStretch(1)        vbox.addLayout(hbox1)        vbox.addLayout(hbox2)        self.setLayout(vbox)        self.setGeometry(300, 300, 300, 150)        self.setWindowTitle('Buttons')        self.show()if __name__ == '__main__':    app = QApplication(sys.argv)    ex = Example()    sys.exit(app.exec_())

import sysfrom PyQt5.QtWidgets import (QWidget, QGridLayout,                             QPushButton, QApplication)class Example(QWidget):    def __init__(self):        super().__init__()        self.initUI()    def initUI(self):        #创建一个网格        grid = QGridLayout()        self.setLayout(grid)        #按钮的标签        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 == '':                #标签为空时，不创建按钮                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_())

import sysfrom PyQt5.QtWidgets import (QWidget, QGridLayout,                             QPushButton, QApplication,QTextEdit)class Example(QWidget):    def __init__(self):        super().__init__()        self.initUI()    def initUI(self):        #创建一个网格        grid = QGridLayout()        self.setLayout(grid)        text_edit = QTextEdit()        #部件的行和列跨,这里的跨度为1行，4列        grid.addWidget(text_edit,0,0,1,4)        #组件的间隔        #grid.setSpacing(5)        #按钮的标签        names = ['Cls', 'Bck', '', 'Close',                 '7', '8', '9', '/',                 '4', '5', '6', '*',                 '1', '2', '3', '-',                 '0', '.', '=', '+']        positions = [(i, j) for i in range(1,6) for j in range(4)]        for position, name in zip(positions, names):            if name == '':                #标签为空时，不创建按钮                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_())

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