初级菜鸟，知识点记录。
每次重新生成UI.py文件的时候，里面的按钮方法都会被清除，想一个方法可以把按钮响应方法放到外面，利于维护。
新建一个按钮文件并继承UI代码，把信号槽及按钮响应方法写在按钮文件里面，这样每次重新生成UI文件时，只需要注释掉信号槽部分，就可以了。
UI 生成py文件，注释掉信号槽部分代码
mainUI.py
1 # -*- coding: utf-8 -*- 2 3 # Form implementation generated from reading ui file 'mainUI.ui' 4 # 5 # Created by: PyQt5 UI code generator 5.11.3 6 # 7 # WARNING! All changes made in this file will be lost! 8 9 from PyQt5 import QtCore, QtGui, QtWidgets 10 11 class Ui_MainWindow(object): 12 def setupUi(self, MainWindow): 13 MainWindow.setObjectName("MainWindow") 14 MainWindow.resize(548, 604) 15 MainWindow.setFocusPolicy(QtCore.Qt.StrongFocus) 16 self.centralwidget = QtWidgets.QWidget(MainWindow) 17 self.centralwidget.setObjectName("centralwidget") 18 self.nav = QtWidgets.QTreeWidget(self.centralwidget) 19 self.nav.setGeometry(QtCore.QRect(0, 0, 131, 551)) 20 self.nav.setObjectName("nav") 21 item_0 = QtWidgets.QTreeWidgetItem(self.nav) 22 item_1 = QtWidgets.QTreeWidgetItem(item_0) 23 icon = QtGui.QIcon() 24 icon.addPixmap(QtGui.QPixmap("../../../../../用户/*****/My Documents/My Pictures/猫儿皱眉.gif"), QtGui.QIcon.Disabled, QtGui.QIcon.Off) 25 item_1.setIcon(0, icon) 26 item_1 = QtWidgets.QTreeWidgetItem(item_0) 27 item_1 = QtWidgets.QTreeWidgetItem(item_0) 28 item_0 = QtWidgets.QTreeWidgetItem(self.nav) 29 item_1 = QtWidgets.QTreeWidgetItem(item_0) 30 item_0 = QtWidgets.QTreeWidgetItem(self.nav) 31 self.frame_3 = QtWidgets.QFrame(self.centralwidget) 32 self.frame_3.setGeometry(QtCore.QRect(140, 10, 391, 541)) 33 self.frame_3.setAutoFillBackground(True) 34 self.frame_3.setFrameShape(QtWidgets.QFrame.Panel) 35 self.frame_3.setFrameShadow(QtWidgets.QFrame.Raised) 36 self.frame_3.setObjectName("frame_3") 37 self.label_3 = QtWidgets.QLabel(self.frame_3) 38 self.label_3.setGeometry(QtCore.QRect(60, 30, 54, 12)) 39 self.label_3.setObjectName("label_3") 40 self.frame_4 = QtWidgets.QFrame(self.centralwidget) 41 self.frame_4.setGeometry(QtCore.QRect(140, 10, 391, 541)) 42 self.frame_4.setAutoFillBackground(True) 43 self.frame_4.setFrameShape(QtWidgets.QFrame.Panel) 44 self.frame_4.setFrameShadow(QtWidgets.QFrame.Raised) 45 self.frame_4.setObjectName("frame_4") 46 self.label_5 = QtWidgets.QLabel(self.frame_4) 47 self.label_5.setGeometry(QtCore.QRect(30, 30, 54, 12)) 48 self.label_5.setObjectName("label_5") 49 self.frame_5 = QtWidgets.QFrame(self.centralwidget) 50 self.frame_5.setGeometry(QtCore.QRect(140, 10, 391, 541)) 51 self.frame_5.setAutoFillBackground(True) 52 self.frame_5.setFrameShape(QtWidgets.QFrame.WinPanel) 53 self.frame_5.setFrameShadow(QtWidgets.QFrame.Raised) 54 self.frame_5.setObjectName("frame_5") 55 self.label_4 = QtWidgets.QLabel(self.frame_5) 56 self.label_4.setGeometry(QtCore.QRect(40, 60, 54, 12)) 57 self.label_4.setObjectName("label_4") 58 MainWindow.setCentralWidget(self.centralwidget) 59 self.menubar = QtWidgets.QMenuBar(MainWindow) 60 self.menubar.setGeometry(QtCore.QRect(0, 0, 548, 23)) 61 self.menubar.setObjectName("menubar") 62 MainWindow.setMenuBar(self.menubar) 63 self.statusbar = QtWidgets.QStatusBar(MainWindow) 64 self.statusbar.setObjectName("statusbar") 65 MainWindow.setStatusBar(self.statusbar) 66 67 #注释掉信号槽部分 68 # self.retranslateUi(MainWindow) 69 # self.nav.itemClicked['QTreeWidgetItem*','int'].connect(self.nav.clear) 70 # QtCore.QMetaObject.connectSlotsByName(MainWindow) 71 72 def retranslateUi(self, MainWindow): 73 _translate = QtCore.QCoreApplication.translate 74 MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow")) 75 self.nav.headerItem().setText(0, _translate("MainWindow", "测试工具")) 76 __sortingEnabled = self.nav.isSortingEnabled() 77 self.nav.setSortingEnabled(False) 78 self.nav.topLevelItem(0).setText(0, _translate("MainWindow", "个贷相关")) 79 self.nav.topLevelItem(0).child(0).setText(0, _translate("MainWindow", "绑房贷")) 80 self.nav.topLevelItem(0).child(1).setText(0, _translate("MainWindow", "查询用户数据")) 81 self.nav.topLevelItem(0).child(2).setText(0, _translate("MainWindow", "删除客户数据")) 82 self.nav.topLevelItem(1).setText(0, _translate("MainWindow", "外联相关")) 83 self.nav.topLevelItem(1).child(0).setText(0, _translate("MainWindow", "绑定平安保单")) 84 self.nav.topLevelItem(2).setText(0, _translate("MainWindow", "iiii相关")) 85 self.nav.setSortingEnabled(__sortingEnabled) 86 self.frame_3.setToolTip(_translate("MainWindow", "farme3")) 87 self.label_3.setText(_translate("MainWindow", "frame3")) 88 self.frame_4.setToolTip(_translate("MainWindow", "farme4")) 89 self.label_5.setText(_translate("MainWindow", "frame4")) 90 self.frame_5.setToolTip(_translate("MainWindow", "frame5")) 91 self.label_4.setText(_translate("MainWindow", "frame5"))
按钮文件，继承UI文件，并定义信号槽
mainButton.py
1 __author__ = 'EX_WLJR_ZHANGYAMEI' 2 from PyQt5 import QtCore, QtGui, QtWidgets 3 from PyQt5.QtWidgets import QApplication,QMainWindow 4 from mainUI import Ui_MainWindow 5 import sys 6 7 8 class mainButton(Ui_MainWindow): 9 #继承UI，并添加信号槽 10 def setupUi(self, MainWindow): 11 #继承UI 12 super(mainButton,self).setupUi(MainWindow) 13 # Ui_MainWindow.setupUi(MainWindow) 14 self.frame_3.close() 15 self.frame_4.close() 16 self.frame_5.close() 17 18 #添加信号槽 19 self.retranslateUi(MainWindow) 20 # self.tabWidget.setCurrentIndex(0) 21 self.nav.itemClicked['QTreeWidgetItem*','int'].connect(self.click01) 22 # self.tabWidget.tabBarDoubleClicked['int'].connect(self.tabRemove) 23 24 QtCore.QMetaObject.connectSlotsByName(MainWindow) 25 26 def __init__(self): 27 pass 28 29 def click01(self,item,n): 30 # print(self.frame_3.wheel()) 31 print(item.text(n),n,item) 32 if item.text(n)=='绑房贷': 33 print('******绑房贷**开始**********') 34 # self.tabWidget.setCurrentIndex(0) 35 # print(self.tabWidget.currentIndex()) 36 # self.tabWidget.show() 37 # self.frame.show() 38 # self.frame_2.close() 39 self.frame_3.show() 40 self.frame_4.close() 41 self.frame_5.close() 42 print('******绑房贷**结束**********') 43 elif item.text(n)=='查询用户数据': 44 print('******查询用户数据**开始**********') 45 # self.tabWidget.setCurrentIndex(1) 46 # print(self.tabWidget.currentIndex()) 47 # self.tabWidget.show() 48 # self.frame.close() 49 # self.frame_2.show() 50 self.frame_3.close() 51 self.frame_4.show() 52 self.frame_5.close() 53 print('******查询用户数据**结束**********') 54 else: 55 self.frame_3.close() 56 self.frame_4.close() 57 self.frame_5.show() 58 pass 59 # self.frame.close() 60 # self.frame_2.close() 61 62 def tabRemove(self,index): 63 # self.tabWidget.tabBar(0).hide() 64 self.tabWidget.removeTab(index) 65 66 if __name__ == '__main__': 67 app = QApplication(sys.argv) 68 #创建窗口 69 MainWindow=QtWidgets.QMainWindow() 70 #加载窗口 71 main = mainButton() 72 main.setupUi(MainWindow) 73 #窗口显示 74 MainWindow.show() 75 sys.exit(app.exec_())