Python3.x+Pyqt5实现界面左侧导航栏的抽屉效果（折叠效果）；界面和业务分离案例01_自己写的，有UI界面源代码

# -*- coding: utf-8 -*- # Form implementation generated from reading ui file 'jiemian_02.ui' # # Created by: PyQt5 UI code generator 5.6 # # 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(800, 600) self.centralwidget = QtWidgets.QWidget(MainWindow) self.centralwidget.setObjectName("centralwidget") self.horizontalLayout = QtWidgets.QHBoxLayout(self.centralwidget) self.horizontalLayout.setObjectName("horizontalLayout") self.splitter = QtWidgets.QSplitter(self.centralwidget) self.splitter.setAutoFillBackground(False) self.splitter.setMidLineWidth(0) self.splitter.setOrientation(QtCore.Qt.Horizontal) self.splitter.setOpaqueResize(True) self.splitter.setHandleWidth(0) self.splitter.setChildrenCollapsible(False) self.splitter.setObjectName("splitter") self.verticalLayoutWidget = QtWidgets.QWidget(self.splitter) self.verticalLayoutWidget.setObjectName("verticalLayoutWidget") self.verticalLayout = QtWidgets.QVBoxLayout(self.verticalLayoutWidget) self.verticalLayout.setContentsMargins(0, 0, 0, 0) self.verticalLayout.setSpacing(10) self.verticalLayout.setObjectName("verticalLayout") self.graphicsView = QtWidgets.QGraphicsView(self.splitter) self.graphicsView.setObjectName("graphicsView") self.horizontalLayout.addWidget(self.splitter) MainWindow.setCentralWidget(self.centralwidget) self.menubar = QtWidgets.QMenuBar(MainWindow) self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 26)) 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"))