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, QtWidgets
class 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_MainWindow
import os,sys
global e_view
pluginsPath='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。