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从零基础学习PyQt5软件app开发
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GUI，全称为图形⽤户界⾯，⼜称为图形⽤户接⼝，是⼀种⼈与计算机通信的界⾯显示格式。 ⽤户打开应⽤程序或⽹站时看到的第⼀个东⻄，并与之交互。 ⽤户界⾯通常包括许多视觉元素，如图标、按钮、图形、显示⽂本和其他⼏种输⼊形式，如复选 框、⽂本输⼊框等。 Python有⼤量⽤于开发GUI的框架，我们在下⾯的列表中收集了⼀些最流⾏的Python GUI框架。 PyQt5Python 对跨平台的 GUI ⼯具集 Qt 的包装实现了 440 个类以及 6000 个函数或者⽅法 ，PyQt 是 作为 Python 的插件实现的。 功能⾮常强⼤，Qt开发多美漂亮的界⾯，也就可以⽤PyQt开发多么漂亮的界⾯。 跨平台的⽀持很好。 Tkiner绑定了 Python 的 Tk GUI ⼯具集 ，就是Python 包装的Tcl代码。 历史最悠久， Python 事实上的标准 GUI 不⽀持拖拽，所有GUI界⾯设计都必须⼿写代码 Pyside另⼀个 Python 对跨平台的 GUI ⼯具集 Qt 的包装。 如果不做商业项⽬，强烈建议使⽤PyQt，资料多，稳定。需要开发闭源商⽤软件的就⽤PySide。 wxPYTHONPython 对跨平台的 GUI ⼯具集 wxWidgets ( C++ 编写)的包装。 ⽐较流⾏的⼀个 Tkinter 的替代品，在各种平台下表现挺好。 PyGTK⼀系列的 Python 对 GTK+ GUI 库的包装。 在windows下表现⼀般 PyQt5第⼀点：在PyQt中编写UI界⾯可以直接通过代码来实现，也可以通过Qt Designer来完成。 第⼆点：Qt Designer的设计符合MVC的架构，其实现了视图和逻辑的分离，从⽽实现了开发的便 捷。Qt Designer中的操作⽅式⼗分灵活，其通过拖拽的⽅式放置控件可以随时查看控件效果。 第三点：Qt Designer⽣成的.ui⽂件（实质上是XML格式的⽂件）也可以通过pyuic5⼯具转换 成.py⽂件。 配置PyQt5（windows和mac系统上的操作）不管在Windows，还是在MAC系统下，安装了anaconda后，QtDesigner都会被安装。 所以这就是从⼀开始我就推荐⼤家安装anaconda的原因，能省去⼤家不少后续安装软件的麻烦。 既然已经安装了，剩下的问题就是找到QtDesigner的启动路径。 在Windows下，启动QtDesigner的路径是： D:\anaconda\Library\bin 上⾯（D:\anaconda）是我在windows下的anaconda安装路径，⼤家需要替换为⾃⼰的 如下图所示：
为什么需要将ui⽂件转为py⽂件？ 如何转？ pyuic5 untitled.ui -o mainForm.py Pycharm配置实现ui文件的自动转化py文件
信号（Signal）和槽（Slot）是Qt中的核⼼机制，也是在PyQt编程中对象之间进⾏通信的机制。 在Qt中，每⼀个QObject对象和PyQt中所有继承⾃QWidget的控件都⽀持信号与槽机制。当信号 发射时，连接的槽函数将会⾃动执⾏。通过object.signal.connect()⽅法连接。 当事件或状态发⽣改变时，就会发出信号。同时，信号会触发所有与这个事件（信号）相关的函 数（槽）。信号与槽可以是多对多的关系。
-计算器软件 – logic.py – main.py – 计算器设计.py – j计算器设计.ui 计算设计.ui本文件主要是由QtDesigner实现的 计算器设计.py # -*- coding: utf-8 -*- # Form implementation generated from reading ui file '计算器设计.ui' # # Created by: PyQt5 UI code generator 5.15.9 # # WARNING: Any manual changes made to this file will be lost when pyuic5 is # run again. Do not edit this file unless you know what you are doing. ```python from PyQt5 import QtCore, QtGui, QtWidgets class Ui_MainWindow(object): def setupUi(self, MainWindow): MainWindow.setObjectName("MainWindow") MainWindow.resize(783, 604) font = QtGui.QFont() font.setFamily("Arial Narrow") MainWindow.setFont(font) self.centralwidget = QtWidgets.QWidget(MainWindow) self.centralwidget.setObjectName("centralwidget") self.gridLayoutWidget = QtWidgets.QWidget(self.centralwidget) self.gridLayoutWidget.setGeometry(QtCore.QRect(0, 50, 781, 500)) self.gridLayoutWidget.setObjectName("gridLayoutWidget") self.gridLayout = QtWidgets.QGridLayout(self.gridLayoutWidget) self.gridLayout.setContentsMargins(0, 0, 0, 0) self.gridLayout.setObjectName("gridLayout") self.pushButton_eq = QtWidgets.QPushButton(self.gridLayoutWidget) sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding) sizePolicy.setHorizontalStretch(0) sizePolicy.setVerticalStretch(0) sizePolicy.setHeightForWidth(self.pushButton_eq.sizePolicy().hasHeightForWidth()) self.pushButton_eq.setSizePolicy(sizePolicy) font = QtGui.QFont() font.setPointSize(30) font.setBold(True) font.setWeight(75) self.pushButton_eq.setFont(font) self.pushButton_eq.setObjectName("pushButton_eq") self.gridLayout.addWidget(self.pushButton_eq, 5, 2, 1, 2) self.pushButton_add = QtWidgets.QPushButton(self.gridLayoutWidget) sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding) sizePolicy.setHorizontalStretch(0) sizePolicy.setVerticalStretch(0) sizePolicy.setHeightForWidth(self.pushButton_add.sizePolicy().hasHeightForWidth()) self.pushButton_add.setSizePolicy(sizePolicy) font = QtGui.QFont() font.setPointSize(30) self.pushButton_add.setFont(font) self.pushButton_add.setObjectName("pushButton_add") self.gridLayout.addWidget(self.pushButton_add, 4, 3, 1, 1) self.pushButton_7 = QtWidgets.QPushButton(self.gridLayoutWidget) sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding) sizePolicy.setHorizontalStretch(0) sizePolicy.setVerticalStretch(0) sizePolicy.setHeightForWidth(self.pushButton_7.sizePolicy().hasHeightForWidth()) self.pushButton_7.setSizePolicy(sizePolicy) font = QtGui.QFont() font.setPointSize(30) self.pushButton_7.setFont(font) self.pushButton_7.setStyleSheet("color: rgb(85, 170, 255);") self.pushButton_7.setObjectName("pushButton_7") self.gridLayout.addWidget(self.pushButton_7, 1, 0, 1, 1) self.pushButton_sub = QtWidgets.QPushButton(self.gridLayoutWidget) sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding) sizePolicy.setHorizontalStretch(0) sizePolicy.setVerticalStretch(0) sizePolicy.setHeightForWidth(self.pushButton_sub.sizePolicy().hasHeightForWidth()) self.pushButton_sub.setSizePolicy(sizePolicy) font = QtGui.QFont() font.setPointSize(30) self.pushButton_sub.setFont(font) self.pushButton_sub.setObjectName("pushButton_sub") self.gridLayout.addWidget(self.pushButton_sub, 2, 3, 1, 1) self.pushButton_0 = QtWidgets.QPushButton(self.gridLayoutWidget) sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding) sizePolicy.setHorizontalStretch(0) sizePolicy.setVerticalStretch(0) sizePolicy.setHeightForWidth(self.pushButton_0.sizePolicy().hasHeightForWidth()) self.pushButton_0.setSizePolicy(sizePolicy) font = QtGui.QFont() font.setPointSize(30) self.pushButton_0.setFont(font) self.pushButton_0.setStyleSheet("color: rgb(85, 170, 255);") self.pushButton_0.setObjectName("pushButton_0") self.gridLayout.addWidget(self.pushButton_0, 5, 0, 1, 1) self.pushButton_perc = QtWidgets.QPushButton(self.gridLayoutWidget) sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding) sizePolicy.setHorizontalStretch(0) sizePolicy.setVerticalStretch(0) sizePolicy.setHeightForWidth(self.pushButton_perc.sizePolicy().hasHeightForWidth()) self.pushButton_perc.setSizePolicy(sizePolicy) font = QtGui.QFont() font.setPointSize(30) font.setBold(False) font.setWeight(50) self.pushButton_perc.setFont(font) self.pushButton_perc.setFocusPolicy(QtCore.Qt.NoFocus) self.pushButton_perc.setObjectName("pushButton_perc") self.gridLayout.addWidget(self.pushButton_perc, 5, 1, 1, 1) self.pushButton_1 = QtWidgets.QPushButton(self.gridLayoutWidget) sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding) sizePolicy.setHorizontalStretch(0) sizePolicy.setVerticalStretch(0) sizePolicy.setHeightForWidth(self.pushButton_1.sizePolicy().hasHeightForWidth()) self.pushButton_1.setSizePolicy(sizePolicy) font = QtGui.QFont() font.setPointSize(30) self.pushButton_1.setFont(font) self.pushButton_1.setStyleSheet("color: rgb(85, 170, 255);") self.pushButton_1.setObjectName("pushButton_1") self.gridLayout.addWidget(self.pushButton_1, 4, 0, 1, 1) self.pushButton_8 = QtWidgets.QPushButton(self.gridLayoutWidget) sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding) sizePolicy.setHorizontalStretch(0) sizePolicy.setVerticalStretch(0) sizePolicy.setHeightForWidth(self.pushButton_8.sizePolicy().hasHeightForWidth()) self.pushButton_8.setSizePolicy(sizePolicy) font = QtGui.QFont() font.setPointSize(30) self.pushButton_8.setFont(font) self.pushButton_8.setStyleSheet("color: rgb(85, 170, 255);") self.pushButton_8.setObjectName("pushButton_8") self.gridLayout.addWidget(self.pushButton_8, 1, 1, 1, 1) self.pushButton_9 = QtWidgets.QPushButton(self.gridLayoutWidget) sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding) sizePolicy.setHorizontalStretch(0) sizePolicy.setVerticalStretch(0) sizePolicy.setHeightForWidth(self.pushButton_9.sizePolicy().hasHeightForWidth()) self.pushButton_9.setSizePolicy(sizePolicy) font = QtGui.QFont() font.setPointSize(30) self.pushButton_9.setFont(font) self.pushButton_9.setStyleSheet("color: rgb(85, 170, 255);") self.pushButton_9.setObjectName("pushButton_9") self.gridLayout.addWidget(self.pushButton_9, 1, 2, 1, 1) self.pushButton_M = QtWidgets.QPushButton(self.gridLayoutWidget) sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding) sizePolicy.setHorizontalStretch(0) sizePolicy.setVerticalStretch(0) sizePolicy.setHeightForWidth(self.pushButton_M.sizePolicy().hasHeightForWidth()) self.pushButton_M.setSizePolicy(sizePolicy) font = QtGui.QFont() font.setPointSize(30) self.pushButton_M.setFont(font) self.pushButton_M.setStyleSheet("color: rgb(85, 170, 255);\n" "color: rgb(170, 85, 0);") self.pushButton_M.setObjectName("pushButton_M") self.gridLayout.addWidget(self.pushButton_M, 0, 1, 1, 1) self.pushButton_5 = QtWidgets.QPushButton(self.gridLayoutWidget) sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding) sizePolicy.setHorizontalStretch(0) sizePolicy.setVerticalStretch(0) sizePolicy.setHeightForWidth(self.pushButton_5.sizePolicy().hasHeightForWidth()) self.pushButton_5.setSizePolicy(sizePolicy) font = QtGui.QFont() font.setPointSize(30) self.pushButton_5.setFont(font) self.pushButton_5.setStyleSheet("color: rgb(85, 170, 255);") self.pushButton_5.setObjectName("pushButton_5") self.gridLayout.addWidget(self.pushButton_5, 2, 1, 1, 1) self.pushButton_6 = QtWidgets.QPushButton(self.gridLayoutWidget) sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding) sizePolicy.setHorizontalStretch(0) sizePolicy.setVerticalStretch(0) sizePolicy.setHeightForWidth(self.pushButton_6.sizePolicy().hasHeightForWidth()) self.pushButton_6.setSizePolicy(sizePolicy) font = QtGui.QFont() font.setPointSize(30) self.pushButton_6.setFont(font) self.pushButton_6.setStyleSheet("color: rgb(85, 170, 255);") self.pushButton_6.setObjectName("pushButton_6") self.gridLayout.addWidget(self.pushButton_6, 2, 2, 1, 1) self.pushButton_RE = QtWidgets.QPushButton(self.gridLayoutWidget) sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding) sizePolicy.setHorizontalStretch(0) sizePolicy.setVerticalStretch(0) sizePolicy.setHeightForWidth(self.pushButton_RE.sizePolicy().hasHeightForWidth()) self.pushButton_RE.setSizePolicy(sizePolicy) font = QtGui.QFont() font.setPointSize(30) self.pushButton_RE.setFont(font) self.pushButton_RE.setStyleSheet("color:rgb(255, 25, 28)") self.pushButton_RE.setObjectName("pushButton_RE") self.gridLayout.addWidget(self.pushButton_RE, 0, 0, 1, 1) self.pushButton_mul = QtWidgets.QPushButton(self.gridLayoutWidget) sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding) sizePolicy.setHorizontalStretch(0) sizePolicy.setVerticalStretch(0) sizePolicy.setHeightForWidth(self.pushButton_mul.sizePolicy().hasHeightForWidth()) self.pushButton_mul.setSizePolicy(sizePolicy) font = QtGui.QFont() font.setPointSize(30) self.pushButton_mul.setFont(font) self.pushButton_mul.setObjectName("pushButton_mul") self.gridLayout.addWidget(self.pushButton_mul, 1, 3, 1, 1) self.pushButton_4 = QtWidgets.QPushButton(self.gridLayoutWidget) sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding) sizePolicy.setHorizontalStretch(0) sizePolicy.setVerticalStretch(0) sizePolicy.setHeightForWidth(self.pushButton_4.sizePolicy().hasHeightForWidth()) self.pushButton_4.setSizePolicy(sizePolicy) font = QtGui.QFont() font.setPointSize(30) self.pushButton_4.setFont(font) self.pushButton_4.setStyleSheet("color: rgb(85, 170, 255);") self.pushButton_4.setObjectName("pushButton_4") self.gridLayout.addWidget(self.pushButton_4, 2, 0, 1, 1) self.pushButton_div = QtWidgets.QPushButton(self.gridLayoutWidget) sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding) sizePolicy.setHorizontalStretch(0) sizePolicy.setVerticalStretch(0) sizePolicy.setHeightForWidth(self.pushButton_div.sizePolicy().hasHeightForWidth()) self.pushButton_div.setSizePolicy(sizePolicy) font = QtGui.QFont() font.setPointSize(30) self.pushButton_div.setFont(font) self.pushButton_div.setObjectName("pushButton_div") self.gridLayout.addWidget(self.pushButton_div, 0, 3, 1, 1) self.pushButton_MR = QtWidgets.QPushButton(self.gridLayoutWidget) sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding) sizePolicy.setHorizontalStretch(0) sizePolicy.setVerticalStretch(0) sizePolicy.setHeightForWidth(self.pushButton_MR.sizePolicy().hasHeightForWidth()) self.pushButton_MR.setSizePolicy(sizePolicy) font = QtGui.QFont() font.setPointSize(30) self.pushButton_MR.setFont(font) self.pushButton_MR.setStyleSheet("color: rgb(85, 170, 255);\n" "color: rgb(170, 85, 0);") self.pushButton_MR.setObjectName("pushButton_MR") self.gridLayout.addWidget(self.pushButton_MR, 0, 2, 1, 1) self.pushButton_2 = QtWidgets.QPushButton(self.gridLayoutWidget) sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding) sizePolicy.setHorizontalStretch(0) sizePolicy.setVerticalStretch(0) sizePolicy.setHeightForWidth(self.pushButton_2.sizePolicy().hasHeightForWidth()) self.pushButton_2.setSizePolicy(sizePolicy) font = QtGui.QFont() font.setPointSize(30) self.pushButton_2.setFont(font) self.pushButton_2.setStyleSheet("color: rgb(85, 170, 255);") self.pushButton_2.setObjectName("pushButton_2") self.gridLayout.addWidget(self.pushButton_2, 4, 1, 1, 1) self.pushButton_3 = QtWidgets.QPushButton(self.gridLayoutWidget) sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding) sizePolicy.setHorizontalStretch(0) sizePolicy.setVerticalStretch(0) sizePolicy.setHeightForWidth(self.pushButton_3.sizePolicy().hasHeightForWidth()) self.pushButton_3.setSizePolicy(sizePolicy) font = QtGui.QFont() font.setPointSize(30) self.pushButton_3.setFont(font) self.pushButton_3.setStyleSheet("color: rgb(85, 170, 255);") self.pushButton_3.setObjectName("pushButton_3") self.gridLayout.addWidget(self.pushButton_3, 4, 2, 1, 1) self.lcdNumber = QtWidgets.QLCDNumber(self.centralwidget) self.lcdNumber.setGeometry(QtCore.QRect(0, 0, 781, 51)) self.lcdNumber.setDigitCount(28) self.lcdNumber.setObjectName("lcdNumber") MainWindow.setCentralWidget(self.centralwidget) self.menubar = QtWidgets.QMenuBar(MainWindow) self.menubar.setGeometry(QtCore.QRect(0, 0, 783, 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")) self.pushButton_eq.setText(_translate("MainWindow", "=")) self.pushButton_add.setText(_translate("MainWindow", "+")) self.pushButton_7.setText(_translate("MainWindow", "7")) self.pushButton_sub.setText(_translate("MainWindow", "-")) self.pushButton_0.setText(_translate("MainWindow", "0")) self.pushButton_perc.setText(_translate("MainWindow", "/100")) self.pushButton_1.setText(_translate("MainWindow", "1")) self.pushButton_8.setText(_translate("MainWindow", "8")) self.pushButton_9.setText(_translate("MainWindow", "9")) self.pushButton_M.setText(_translate("MainWindow", "M")) self.pushButton_5.setText(_translate("MainWindow", "5")) self.pushButton_6.setText(_translate("MainWindow", "6")) self.pushButton_RE.setText(_translate("MainWindow", "RE")) self.pushButton_mul.setText(_translate("MainWindow", "*")) self.pushButton_4.setText(_translate("MainWindow", "4")) self.pushButton_div.setText(_translate("MainWindow", "/")) self.pushButton_MR.setText(_translate("MainWindow", "MR")) self.pushButton_2.setText(_translate("MainWindow", "2")) self.pushButton_3.setText(_translate("MainWindow", "3")) logic.py from PyQt5 import QtWidgets class CalState: READY = 0 #ready INPUT = 1 #input class CalLogic: def __init__(self,lcd_widget:QtWidgets.QLCDNumber): self.lcd_widget = lcd_widget self.state = None self.stack = None #list self.last_opration = None self.current_oprator = None self.memory = None def init_cal(self): """初始化计算机的状态""" self.state = CalState.READY self.stack = [0] self.last_opration = None self.current_oprator = None self._display() def _display(self): """计算机数字显示屏的显示""" self.lcd_widget.display(self.stack[-1]) def number_slot(self,num_val): """数字0-9的槽函数""" if self.state == CalState.READY: self.stack[-1] = num_val self.state = CalState.INPUT else: self.stack[-1] = self.stack[-1] * 10 + num_val self._display() def opration_slot(self,oper): """实现计算器+-*/四个按键的槽函数""" self.current_oprator = oper self.state = CalState.INPUT self.stack.append(0) #stack列表中就有2个元素[0,0] def perc_slot(self): """实现1/100按键的槽函数""" self.stack[-1] *= 0.01 self._display() self.state = CalState.INPUT def eq_slot(self): if self.current_oprator: # 我们这个case中，+ try: result = self._do_oprator(self.stack[0],self.stack[1]) except Exception: self.lcd_widget.display("error") self.stack = [0] return self.stack = [result] self.current_oprator = None self.state = CalState.READY self._display() #self.statck[3] def _do_oprator(self,oprand1,oprand2): """执行加减乘除操作逻辑""" if self.current_oprator == "+": result = oprand1 + oprand2 elif self.current_oprator == "-": result = oprand1 - oprand2 elif self.current_oprator == "*": result = oprand1 * oprand2 else: result = oprand1 / oprand2 return result def re_slot(self): self.init_cal() def m_slot(self): self.memory = self.lcd_widget.value() def mr_slot(self): self.stack[-1] = self.memory self.state = CalState.INPUT self._display() main.py from PyQt5.QtWidgets import * from 计算器设计 import Ui_MainWindow from logic import CalLogic class MyMainWindows(QMainWindow,Ui_MainWindow): def __init__(self,*args,**kwargs): super(MyMainWindows,self).__init__(*args,**kwargs) self.setupUi(self) self.cl = CalLogic(self.lcdNumber) self.do_signal_slot() self.cl.init_cal() def do_signal_slot(self): "给数字0至9建立clicked信号和槽函数" self.pushButton_0.clicked.connect(lambda:self.cl.number_slot(0)) self.pushButton_1.clicked.connect(lambda:self.cl.number_slot(1)) self.pushButton_2.clicked.connect(lambda:self.cl.number_slot(2)) self.pushButton_3.clicked.connect(lambda:self.cl.number_slot(3)) self.pushButton_4.clicked.connect(lambda:self.cl.number_slot(4)) self.pushButton_5.clicked.connect(lambda:self.cl.number_slot(5)) self.pushButton_6.clicked.connect(lambda:self.cl.number_slot(6)) self.pushButton_7.clicked.connect(lambda:self.cl.number_slot(7)) self.pushButton_8.clicked.connect(lambda:self.cl.number_slot(8)) self.pushButton_9.clicked.connect(lambda:self.cl.number_slot(9)) """RE,M,MR""" self.pushButton_RE.clicked.connect(self.cl.re_slot) self.pushButton_RE.clicked.connect(self.cl.m_slot) self.pushButton_RE.clicked.connect(self.cl.mr_slot) """=""" self.pushButton_eq.clicked.connect(self.cl.eq_slot) """给+-*/建立clicked信号和槽函数""" self.pushButton_add.clicked.connect(lambda :self.cl.opration_slot("+")) self.pushButton_sub.clicked.connect(lambda :self.cl.opration_slot("-")) self.pushButton_mul.clicked.connect(lambda :self.cl.opration_slot("*")) self.pushButton_div.clicked.connect(lambda :self.cl.opration_slot("/")) """1/100按键建立""" self.pushButton_perc.clicked.connect(self.cl.perc_slot) if __name__ == "__main__": app = QApplication([]) windows = MyMainWindows() windows.setWindowTitle("小丁") windows.show() app.exec_() 最终的效果
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在MAC下，启动路径是： /Users/ksy/anaconda3/bin/Designer.app 上⾯（/Users/zhenguo/anaconda3）是我的anaconda安装路径，⼤家需要替换为⾃⼰的 如果每次都要去找到这个路径，然后启动，在PyCharm开发中，不是很⽅便。 PyCharm作为⼀个好⽤的开发利器，能帮助我们解决这个每次都要找路径然后启动的问题。 具体操作步骤，如下所示： 第⼀步：打开PyCharm 第⼆步：点击左上⻆：File 第三步：Windows选择Settings，MAC系统选择Preferences 第四步：弹出来界⾯，左侧界⾯，选择Tools，点开后选择External Tools 第五步：在弹出下⾯对话框中，依次填写： Name：QtDesigner Group：Qt Program：填写上⾯QtDesigner的启动路径，在MAC下，启动路径是： /Users/zhenguo/anaconda3/bin/Designer.app 在Windows下启动路径是： D:\anaconda\Library\bin Working directory：ProjectFileDir 整个界⾯填写完成后，如下所示： 
Program: Windows系统： D:\anaconda\bin\python.exe MAC系统下： /Users/zhenguo/anaconda3/bin/python Arguments: -m PyQt5.uic.pyuic
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