PyQt5实现简易计算器

本文实例为大家分享了PyQt5实现简易计算器的具体代码，供大家参考，具体内容如下

效果图：

界面代码

calc_interface.py

# -*- coding: utf-8 -*-# Form implementation generated from reading ui file 'calc_interface.ui'## Created by: PyQt5 UI code generator 5.8.2## WARNING! All changes made in this file will be lost!from PyQt5 import QtCore, QtGui, QtWidgetsclass Ui_MainWindow(object): def setupUi(self, MainWindow): MainWindow.setObjectName("MainWindow") MainWindow.resize(647, 675) self.centralwidget = QtWidgets.QWidget(MainWindow) self.centralwidget.setObjectName("centralwidget") self.b_1 = QtWidgets.QPushButton(self.centralwidget) self.b_1.setGeometry(QtCore.QRect(10, 330, 71, 71)) self.b_1.setObjectName("b_1") self.b_2 = QtWidgets.QPushButton(self.centralwidget) self.b_2.setGeometry(QtCore.QRect(80, 330, 71, 71)) self.b_2.setObjectName("b_2") self.b_3 = QtWidgets.QPushButton(self.centralwidget) self.b_3.setGeometry(QtCore.QRect(150, 330, 71, 71)) self.b_3.setObjectName("b_3") self.b_6 = QtWidgets.QPushButton(self.centralwidget) self.b_6.setGeometry(QtCore.QRect(150, 400, 71, 71)) self.b_6.setObjectName("b_6") self.b_4 = QtWidgets.QPushButton(self.centralwidget) self.b_4.setGeometry(QtCore.QRect(10, 400, 71, 71)) self.b_4.setObjectName("b_4") self.b_5 = QtWidgets.QPushButton(self.centralwidget) self.b_5.setGeometry(QtCore.QRect(80, 400, 71, 71)) self.b_5.setObjectName("b_5") self.b_8 = QtWidgets.QPushButton(self.centralwidget) self.b_8.setGeometry(QtCore.QRect(80, 470, 71, 71)) self.b_8.setObjectName("b_8") self.b_9 = QtWidgets.QPushButton(self.centralwidget) self.b_9.setGeometry(QtCore.QRect(150, 470, 71, 71)) self.b_9.setObjectName("b_9") self.b_7 = QtWidgets.QPushButton(self.centralwidget) self.b_7.setGeometry(QtCore.QRect(10, 470, 71, 71)) self.b_7.setObjectName("b_7") self.b_eq = QtWidgets.QPushButton(self.centralwidget) self.b_eq.setGeometry(QtCore.QRect(150, 540, 211, 71)) self.b_eq.setObjectName("b_eq") self.b_mod = QtWidgets.QPushButton(self.centralwidget) self.b_mod.setGeometry(QtCore.QRect(220, 400, 71, 71)) self.b_mod.setObjectName("b_mod") self.b_bra_l = QtWidgets.QPushButton(self.centralwidget) self.b_bra_l.setGeometry(QtCore.QRect(220, 330, 71, 71)) self.b_bra_l.setObjectName("b_bra_l") self.b_div = QtWidgets.QPushButton(self.centralwidget) self.b_div.setGeometry(QtCore.QRect(220, 260, 71, 71)) self.b_div.setObjectName("b_div") self.b_add = QtWidgets.QPushButton(self.centralwidget) self.b_add.setGeometry(QtCore.QRect(10, 260, 71, 71)) self.b_add.setObjectName("b_add") self.b_sub = QtWidgets.QPushButton(self.centralwidget) self.b_sub.setGeometry(QtCore.QRect(80, 260, 71, 71)) self.b_sub.setObjectName("b_sub") self.b_mul = QtWidgets.QPushButton(self.centralwidget) self.b_mul.setGeometry(QtCore.QRect(150, 260, 71, 71)) self.b_mul.setObjectName("b_mul") self.b_pow = QtWidgets.QPushButton(self.centralwidget) self.b_pow.setGeometry(QtCore.QRect(290, 260, 71, 71)) self.b_pow.setObjectName("b_pow") self.b_pai = QtWidgets.QPushButton(self.centralwidget) self.b_pai.setGeometry(QtCore.QRect(290, 400, 71, 71)) self.b_pai.setObjectName("b_pai") self.b_bra_r = QtWidgets.QPushButton(self.centralwidget) self.b_bra_r.setGeometry(QtCore.QRect(290, 330, 71, 71)) self.b_bra_r.setObjectName("b_bra_r") self.l_hist = QtWidgets.QListWidget(self.centralwidget) self.l_hist.setGeometry(QtCore.QRect(380, 10, 256, 601)) self.l_hist.setObjectName("l_hist") self.e_view = QtWidgets.QTextEdit(self.centralwidget) self.e_view.setGeometry(QtCore.QRect(10, 10, 351, 231)) font = QtGui.QFont() font.setFamily("Adobe Caslon Pro Bold") font.setPointSize(22) font.setBold(True) font.setWeight(75) self.e_view.setFont(font) self.e_view.setObjectName("e_view") self.b_0 = QtWidgets.QPushButton(self.centralwidget) self.b_0.setGeometry(QtCore.QRect(80, 540, 71, 71)) self.b_0.setObjectName("b_0") self.b_pt = QtWidgets.QPushButton(self.centralwidget) self.b_pt.setGeometry(QtCore.QRect(10, 540, 71, 71)) self.b_pt.setObjectName("b_pt") self.b_del = QtWidgets.QPushButton(self.centralwidget) self.b_del.setGeometry(QtCore.QRect(220, 470, 71, 71)) self.b_del.setObjectName("b_del") self.b_clc = QtWidgets.QPushButton(self.centralwidget) self.b_clc.setGeometry(QtCore.QRect(290, 470, 71, 71)) self.b_clc.setObjectName("b_clc") MainWindow.setCentralWidget(self.centralwidget) self.menubar = QtWidgets.QMenuBar(MainWindow) self.menubar.setGeometry(QtCore.QRect(0, 0, 647, 30)) 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.b_1.setText(_translate("MainWindow", "1")) self.b_2.setText(_translate("MainWindow", "2")) self.b_3.setText(_translate("MainWindow", "3")) self.b_6.setText(_translate("MainWindow", "6")) self.b_4.setText(_translate("MainWindow", "4")) self.b_5.setText(_translate("MainWindow", "5")) self.b_8.setText(_translate("MainWindow", "8")) self.b_9.setText(_translate("MainWindow", "9")) self.b_7.setText(_translate("MainWindow", "7")) self.b_eq.setText(_translate("MainWindow", "=")) self.b_mod.setText(_translate("MainWindow", "%")) self.b_bra_l.setText(_translate("MainWindow", "(")) self.b_div.setText(_translate("MainWindow", "/")) self.b_add.setText(_translate("MainWindow", "+")) self.b_sub.setText(_translate("MainWindow", "-")) self.b_mul.setText(_translate("MainWindow", "*")) self.b_pow.setText(_translate("MainWindow", "^")) self.b_pai.setText(_translate("MainWindow", "π")) self.b_bra_r.setText(_translate("MainWindow", ")")) self.b_0.setText(_translate("MainWindow", "0")) self.b_pt.setText(_translate("MainWindow", ".")) self.b_del.setText(_translate("MainWindow", "删除")) self.b_clc.setText(_translate("MainWindow", "清空"))

主逻辑代码

calc_main.py

from PyQt5.QtCore import *from PyQt5.QtGui import *from PyQt5.QtWidgets import *from calc_interface import Ui_MainWindowimport os,sysglobal e_viewpluginsPath='PyQt5/Qt/plugins'if os.path.exists(pluginsPath):#指定插件路径。源码运行时不会生效，打包后运行检测到路径，加载插件 QApplication.addLibraryPath(pluginsPath)class MyMainWindow(QMainWindow, Ui_MainWindow): def forge_link(self): self.b_0.clicked.connect(self.button_event(0)) self.b_1.clicked.connect(self.button_event(1)) self.b_2.clicked.connect(self.button_event(2)) self.b_3.clicked.connect(self.button_event(3)) self.b_4.clicked.connect(self.button_event(4)) self.b_5.clicked.connect(self.button_event(5)) self.b_6.clicked.connect(self.button_event(6)) self.b_7.clicked.connect(self.button_event(7)) self.b_8.clicked.connect(self.button_event(8)) self.b_9.clicked.connect(self.button_event(9)) self.b_add.clicked.connect(self.button_event('+')) self.b_sub.clicked.connect(self.button_event('-')) self.b_mul.clicked.connect(self.button_event('*')) self.b_div.clicked.connect(self.button_event('/')) self.b_pow.clicked.connect(self.button_event('**')) self.b_bra_l.clicked.connect(self.button_event('(')) self.b_bra_r.clicked.connect(self.button_event(')')) self.b_mod.clicked.connect(self.button_event('%')) self.b_pai.clicked.connect(self.button_event('3.1415926')) self.b_pt.clicked.connect(self.button_event('.')) self.b_del.clicked.connect(self.delete_event) self.b_clc.clicked.connect(self.clear_event) self.b_eq.clicked.connect(self.calc_complish) def __init__(self, parent=None): super(MyMainWindow, self).__init__(parent) self.setupUi(self) self.forge_link() #连接槽函数 def button_event(self,arg): # print(dir(self.e_view)) global e_view e_view=self.e_view def fun(): #返回一个自定义的槽函数  global e_view  txt = e_view.toPlainText()  e_view.setText(txt + str(arg)) return fun def calc_complish(self): txt=self.e_view.toPlainText() ans='' try:  ans=str(eval(txt)) except BaseException:  ans='MathError' # print(ans) self.clear_event() self.e_view.setText(ans) self.l_hist.addItem(txt+'='+ans) def clear_event(self): self.e_view.setText('') def delete_event(self): txt = self.e_view.toPlainText() txt=txt[:len(txt)-1] self.e_view.setText(txt)if __name__ == '__main__': app=QApplication(sys.argv) myWin=MyMainWindow() myWin.show() sys.exit(app.exec())

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。