from PyQt5.QtWidgets import QApplication, QMainWindow, QWidget from PyQT_demo.switch_interface.first import First_Ui_Form from PyQT_demo.switch_interface.main import Ui_MainWindow from PyQT_demo.switch_interface.second import Second_Ui_Form from PyQT_demo.switch_interface.third import Third_Ui_Form class MyWindow(QMainWindow, Ui_MainWindow): dict_ = { 'pushButton': [0, 'first'], 'pushButton_2': [1, 'second'], 'pushButton_3': [2, 'third'] def __init__(self, parent=None): super(MyWindow, self).__init__(parent) self.first = First_Ui_Form() self.second = Second_Ui_Form() self.third = Third_Ui_Form() self.setupUi(self) # 多个页面的绑定 for k, v in self.dict_.items(): form = QWidget() # 将各个子页面添加到对应控件form eval('self.{}.setupUi(form)'.format(v[1])) # 在stackedWidget添加子控件form self.stackedWidget.addWidget(form) # 将按钮连接同一个槽函数 eval('self.{}.clicked.connect(self.show_page)'.format(k)) # 展示index的页面 def show_page(self): index = self.dict_[self.sender().objectName()][0] self.stackedWidget.setCurrentIndex(index) if __name__ == '__main__': app = QApplication(sys.argv) myWin = MyWindow() myWin.show() sys.exit(app.exec())

1.第一个子页面(first.py)

# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'first.ui'
# Created by: PyQt5 UI code generator 5.9.2
# WARNING! All changes made in this file will be lost!
from PyQt5 import QtCore, QtGui, QtWidgets
class First_Ui_Form(object):
    def setupUi(self, Form):
        Form.setObjectName("Form")
        Form.resize(589, 491)
        self.widget = QtWidgets.QWidget(Form)
        self.widget.setGeometry(QtCore.QRect(130, 80, 371, 301))
        self.widget.setObjectName("widget")
        self.lineEdit = QtWidgets.QLineEdit(self.widget)
        self.lineEdit.setGeometry(QtCore.QRect(80, 110, 133, 20))
        self.lineEdit.setObjectName("lineEdit")
        self.retranslateUi(Form)
        QtCore.QMetaObject.connectSlotsByName(Form)
    def retranslateUi(self, Form):
        _translate = QtCore.QCoreApplication.translate
        Form.setWindowTitle(_translate("Form", "Form"))
        self.lineEdit.setText(_translate("Form", "first"))
2.第二个子页面(second.py)
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'second.ui'
# Created by: PyQt5 UI code generator 5.9.2
# WARNING! All changes made in this file will be lost!
from PyQt5 import QtCore, QtGui, QtWidgets
class Second_Ui_Form(object):
    def setupUi(self, Form):
        Form.setObjectName("Form")
        Form.resize(538, 524)
        self.lineEdit = QtWidgets.QLineEdit(Form)
        self.lineEdit.setGeometry(QtCore.QRect(210, 160, 113, 20))
        self.lineEdit.setObjectName("lineEdit")
        self.retranslateUi(Form)
        QtCore.QMetaObject.connectSlotsByName(Form)
    def retranslateUi(self, Form):
        _translate = QtCore.QCoreApplication.translate
        Form.setWindowTitle(_translate("Form", "Form"))
        self.lineEdit.setText(_translate("Form", "second"))
3.第三个子页面用(third.py)
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'third.ui'
# Created by: PyQt5 UI code generator 5.9.2
# WARNING! All changes made in this file will be lost!
from PyQt5 import QtCore, QtGui, QtWidgets
class Third_Ui_Form(object):
    def setupUi(self, Form):
        Form.setObjectName("Form")
        Form.resize(591, 391)
        self.lineEdit = QtWidgets.QLineEdit(Form)
        self.lineEdit.setGeometry(QtCore.QRect(220, 110, 113, 20))
        self.lineEdit.setObjectName("lineEdit")
        self.retranslateUi(Form)
        QtCore.QMetaObject.connectSlotsByName(Form)
    def retranslateUi(self, Form):
        _translate = QtCore.QCoreApplication.translate
        Form.setWindowTitle(_translate("Form", "Form"))
        self.lineEdit.setText(_translate("Form", "third"))
4.主页面(main_show.py)
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'main.ui'
# Created by: PyQt5 UI code generator 5.9.2
# WARNING! All changes made in this file will be lost!
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(792, 600)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(40, 130, 75, 23))
        self.pushButton.setObjectName("pushButton")
        self.pushButton_2 = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton_2.setGeometry(QtCore.QRect(40, 190, 75, 23))
        self.pushButton_2.setObjectName("pushButton_2")
        self.pushButton_3 = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton_3.setGeometry(QtCore.QRect(40, 260, 75, 23))
        self.pushButton_3.setObjectName("pushButton_3")
        self.stackedWidget = QtWidgets.QStackedWidget(self.centralwidget)
        self.stackedWidget.setGeometry(QtCore.QRect(149, 30, 481, 451))
        self.stackedWidget.setObjectName("stackedWidget")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 792, 23))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)
        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)
    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))