


This article mainlyintroducespython3.5 + PyQt5 +Eric6 to implement a calculator method (with code), the calculator can run perfectly on the windows7 32-bit system, with Those who are interested can find out.
Simple calculations can currently be implemented. Please reset before calculating. The default number during design is 0. It took me a long time to get such a result, but there are many bugs. python3.5 + PyQt5 +Eric6 can run the calculator perfectly on Windows 7 32-bit system. It took me a long time to simply learn it and draw a picture to implement it. There are bugs. Some buttons have not been implemented yet and will be optimized in the future.
The code structure is as shown below:
jisuan.py
import re #匹配整数或小数的乘除法,包括了开头存在减号的情况 mul_p=re.compile("(-?\d+)(\.\d+)?(\*|/)(-?\d+)(\.\d+)?") #匹配整数或小数的加减法,包括了开头存在减号的情况 plus_minus = re.compile("(-?\d+)(\.\d+)?(-|\+)(-?\d+)(\.\d+)?") #匹配括号 bracket=re.compile("\([^()]*\)") #匹配乘法的时候出现乘以负数的情况,包括了开头存在减号的情况 mul_minus_minus = re.compile("(-?\d+)(\.\d+)?(\*-)(\d+)(\.\d+)?") #匹配除法的时候出现乘以负数的情况,包括了开头存在减号的情况 p_minus_minus = re.compile("(-?\d+)(\.\d+)?(/-)(\d+)(\.\d+)?") #定义一个两位数的加减乘除法的运算,匹配左边的右边的数字和左边的数字,然后进行计算 def touble_cale(str_expire): if str_expire.count("+") == 1: right_num = float(str_expire[(str_expire.find("+")+1):]) left_num = float(str_expire[:str_expire.find("+")]) return str(right_num+left_num) elif str_expire[1:].count("-") == 1: right_num = float(str_expire[:str_expire.find("-",1)]) left_num = float(str_expire[(str_expire.find("-", 1) + 1):]) return str(right_num - left_num) elif str_expire.count("*") == 1: right_num = float(str_expire[:str_expire.find("*")]) left_num = float(str_expire[(str_expire.find("*")+1):]) return str(right_num * left_num) elif str_expire.count("/") == 1: right_num = float(str_expire[:str_expire.find("/")]) left_num = float(str_expire[(str_expire.find("/") + 1):]) return str(right_num / left_num) #定义一个方法用于判断是否存在乘以负数和除以负数的情况 def judge_mul_minus(str_expire): #判断公式中乘以负数的部分 if len(re.findall("(\*-)", str_expire)) != 0: #调用上面的正则取得*-的公式 temp_mul_minus = mul_minus_minus.search(str_expire).group() #将匹配的部分的*-换成*并将-放到前面 temp_mul_minus_2 = temp_mul_minus.replace(temp_mul_minus,"-" + temp_mul_minus.replace("*-","*")) #经更改的的部分与原来的部分进行替换 str_expire=str_expire.replace(temp_mul_minus,temp_mul_minus_2) return judge_mul_minus(str_expire) #return str_expire # 判断公式中除以负数的部分 elif len(re.findall(r"(/-)", str_expire)) != 0: # 调用上面的正则取得/-的公式 temp_dev_minus = p_minus_minus.search(str_expire).group() # 将匹配的部分的/-换成/并将-放到前面 temp_dev_minus_2 = temp_dev_minus.replace(temp_dev_minus,"-" + temp_dev_minus.replace("/-","/")) # 经更改的的部分与原来的部分进行替换 str_expire = str_expire.replace(temp_dev_minus,temp_dev_minus_2) return judge_mul_minus(str_expire) #调用change_sign将公式中的++换成= +-换成- return change_sign(str_expire) #定义一个方法取将--更改为+ +-改为- def change_sign(str_expire): if len(re.findall(r"(\+-)", str_expire)) != 0: str_expire = str_expire.replace("+-", "-") return change_sign(str_expire) elif len(re.findall(r"(--)", str_expire)) != 0: str_expire = str_expire.replace("--", "+") return change_sign(str_expire) return str_expire #定义一个方法用于计算只有加减乘除的公式,优先处理乘法 def cale_mix(str_expire): #如果公式中出现符号数字的情况即+5 -6 *8 /8的这种情况直接放回数字否则则先计算乘除在处理加减 while len(re.findall("[-+*/]",str_expire[1:])) != 0: if len(re.findall("(\*|/)",str_expire)) != 0: str_expire = str_expire.replace(mul_p.search(str_expire).group(),touble_cale(mul_p.search(str_expire).group())) elif len(re.findall("(\+|-)",str_expire)) !=0: str_expire = str_expire.replace(plus_minus.search(str_expire).group(),touble_cale(plus_minus.search(str_expire).group())) return str_expire #定义一个方法用于去括号,并调用上述的方法进行计算 def remove_bracket(str_expire): #判断公式中是否有括号 if len(bracket.findall(str_expire)) == 0: return cale_mix(judge_mul_minus(str_expire)) elif len(bracket.findall(str_expire))!=0: while len(bracket.findall(str_expire)) !=0: #print(bracket.search(str_expire).group()) #只有存在括号优先处理括号中的内容并对内容进行替换,直到没有括号位置 str_expire = str_expire.replace(bracket.search(str_expire).group(),cale_mix(judge_mul_minus(bracket.search(str_expire).group()[1:-1]))) str_expire = cale_mix(judge_mul_minus(str_expire)) return str_expire if name == "main": while True: user_input_expire = input("请输入你的公式:(不要带空格,q表示退出):") print("%s=%s" %(user_input_expire,remove_bracket(user_input_expire))) continue
untitled.py
# -*- coding: utf-8 -*- from PyQt5.QtCore import * from PyQt5.QtWidgets import * from PyQt5 import QtCore, QtGui, QtWidgets from Ui_untitled import Ui_Dialog from jisuan import remove_bracket class Dialog(QDialog, Ui_Dialog): def init(self, parent=None): super(Dialog, self).init(parent) self.setupUi(self) @pyqtSlot() def on_Button_6_clicked(self): self.Edit_xianshi.insertPlainText('6') @pyqtSlot() def on_Button_2_clicked(self): self.Edit_xianshi.insertPlainText('2') @pyqtSlot() def on_Button_3_clicked(self): self.Edit_xianshi.insertPlainText('3') @pyqtSlot() def on_Button_pingfang_clicked(self): me=self.Edit_xianshi.toPlainText() m=int(me) *int(me) self.Edit_xianshi.clear() self.Edit_xianshi.append(str(m)) @pyqtSlot() def on_Button_add_clicked(self): h=self.Edit_xianshi.toPlainText() self.Edit_xianshi.clear() self.Edit_xianshi.append(h+'+') @pyqtSlot() def on_Button_jian_clicked(self): h = self.Edit_xianshi.toPlainText() self.Edit_xianshi.clear() self.Edit_xianshi.append(h + '-') @pyqtSlot() def on_Button_9_clicked(self): self.Edit_xianshi.insertPlainText('9') @pyqtSlot() def on_Button_chu_clicked(self): h = self.Edit_xianshi.toPlainText() self.Edit_xianshi.clear() self.Edit_xianshi.append(h + '/') @pyqtSlot() def on_Button_cheng_clicked(self): h = self.Edit_xianshi.toPlainText() self.Edit_xianshi.clear() self.Edit_xianshi.append(h + '*') @pyqtSlot() def on_Button_8_clicked(self): self.Edit_xianshi.insertPlainText('8') @pyqtSlot() def on_Button_4_clicked(self): self.Edit_xianshi.insertPlainText('4') @pyqtSlot() def on_Button_esc_clicked(self): self.Edit_xianshi.clear() @pyqtSlot() def on_Button_7_clicked(self): self.Edit_xianshi.insertPlainText('7') @pyqtSlot() def on_Button_1_clicked(self): self.Edit_xianshi.insertPlainText('1') @pyqtSlot() def on_Button_5_clicked(self): self.Edit_xianshi.insertPlainText('5') @pyqtSlot() def on_Button_xiaoshu_clicked(self): self.Edit_xianshi.insertPlainText('.') @pyqtSlot() def on_Button_0_clicked(self): self.Edit_xianshi.insertPlainText('0') @pyqtSlot() def on_Button_dengyu_clicked(self): pe=self.Edit_xianshi.toPlainText() m=remove_bracket(pe) self.Edit_xianshi.clear() self.Edit_xianshi.append(str(m)) def on_Button_fenzhi_clicked(self): pe = self.Edit_xianshi.toPlainText() if int(pe) ==0: QMessageBox.information(self,u'提示',u'零不能作为分母') Dialog() else: m=1/(int(pe)) self.Edit_xianshi.clear() self.Edit_xianshi.append(str(m)) Dialog() if name =="main": import sys app = QtWidgets.QApplication(sys.argv) app.processEvents() ui = Dialog() ui.show() sys.exit(app.exec_())
Ui_untitled.py
# -*- coding: utf-8 -*- # Form implementation generated from reading ui file 'C:\Users\Administrator\Desktop\pyqt5\untitled.ui' # # Created by: PyQt5 UI code generator 5.5 # # WARNING! All changes made in this file will be lost! from PyQt5 import QtCore, QtGui, QtWidgets class Ui_Dialog(object): def setupUi(self, Dialog): Dialog.setObjectName("Dialog") Dialog.resize(357, 320) Dialog.setStyleSheet("font: 75 16pt \"Aharoni\";\n" "background-color: rgb(206, 255, 251);") self.label = QtWidgets.QLabel(Dialog) self.label.setGeometry(QtCore.QRect(201, 210, 301, 21)) self.label.setText("") self.label.setObjectName("label") self.Edit_xianshi = QtWidgets.QTextEdit(Dialog) self.Edit_xianshi.setGeometry(QtCore.QRect(0, 0, 351, 41)) self.Edit_xianshi.setStyleSheet("font: 75 16pt \"Aharoni\";") self.Edit_xianshi.setObjectName("Edit_xianshi") self.gridLayoutWidget = QtWidgets.QWidget(Dialog) self.gridLayoutWidget.setGeometry(QtCore.QRect(0, 30, 351, 281)) self.gridLayoutWidget.setObjectName("gridLayoutWidget") self.gridLayout = QtWidgets.QGridLayout(self.gridLayoutWidget) self.gridLayout.setObjectName("gridLayout") self.Button_6 = QtWidgets.QPushButton(self.gridLayoutWidget) self.Button_6.setObjectName("Button_6") self.gridLayout.addWidget(self.Button_6, 2, 2, 1, 1) self.Button_2 = QtWidgets.QPushButton(self.gridLayoutWidget) self.Button_2.setObjectName("Button_2") self.gridLayout.addWidget(self.Button_2, 3, 1, 1, 1) self.Button_3 = QtWidgets.QPushButton(self.gridLayoutWidget) self.Button_3.setObjectName("Button_3") self.gridLayout.addWidget(self.Button_3, 3, 2, 1, 1) self.Button_fenzhi = QtWidgets.QPushButton(self.gridLayoutWidget) self.Button_fenzhi.setObjectName("Button_fenzhi") self.gridLayout.addWidget(self.Button_fenzhi, 1, 3, 1, 1) self.Button_pingfang = QtWidgets.QPushButton(self.gridLayoutWidget) self.Button_pingfang.setObjectName("Button_pingfang") self.gridLayout.addWidget(self.Button_pingfang, 0, 3, 1, 1) self.Button_add = QtWidgets.QPushButton(self.gridLayoutWidget) self.Button_add.setObjectName("Button_add") self.gridLayout.addWidget(self.Button_add, 2, 3, 1, 1) self.Button_jian = QtWidgets.QPushButton(self.gridLayoutWidget) self.Button_jian.setObjectName("Button_jian") self.gridLayout.addWidget(self.Button_jian, 3, 3, 1, 1) self.Button_9 = QtWidgets.QPushButton(self.gridLayoutWidget) self.Button_9.setObjectName("Button_9") self.gridLayout.addWidget(self.Button_9, 1, 2, 1, 1) self.Button_chu = QtWidgets.QPushButton(self.gridLayoutWidget) self.Button_chu.setObjectName("Button_chu") self.gridLayout.addWidget(self.Button_chu, 0, 2, 1, 1) self.Button_cheng = QtWidgets.QPushButton(self.gridLayoutWidget) self.Button_cheng.setObjectName("Button_cheng") self.gridLayout.addWidget(self.Button_cheng, 0, 1, 1, 1) self.Button_8 = QtWidgets.QPushButton(self.gridLayoutWidget) self.Button_8.setObjectName("Button_8") self.gridLayout.addWidget(self.Button_8, 1, 1, 1, 1) self.Button_4 = QtWidgets.QPushButton(self.gridLayoutWidget) self.Button_4.setObjectName("Button_4") self.gridLayout.addWidget(self.Button_4, 2, 0, 1, 1) self.Button_esc = QtWidgets.QPushButton(self.gridLayoutWidget) self.Button_esc.setObjectName("Button_esc") self.gridLayout.addWidget(self.Button_esc, 0, 0, 1, 1) self.Button_7 = QtWidgets.QPushButton(self.gridLayoutWidget) self.Button_7.setObjectName("Button_7") self.gridLayout.addWidget(self.Button_7, 1, 0, 1, 1) self.Button_1 = QtWidgets.QPushButton(self.gridLayoutWidget) self.Button_1.setObjectName("Button_1") self.gridLayout.addWidget(self.Button_1, 3, 0, 1, 1) self.Button_5 = QtWidgets.QPushButton(self.gridLayoutWidget) self.Button_5.setObjectName("Button_5") self.gridLayout.addWidget(self.Button_5, 2, 1, 1, 1) self.pushButton_17 = QtWidgets.QPushButton(self.gridLayoutWidget) self.pushButton_17.setText("") self.pushButton_17.setObjectName("pushButton_17") self.gridLayout.addWidget(self.pushButton_17, 4, 0, 1, 1) self.Button_xiaoshu = QtWidgets.QPushButton(self.gridLayoutWidget) self.Button_xiaoshu.setObjectName("Button_xiaoshu") self.gridLayout.addWidget(self.Button_xiaoshu, 4, 1, 1, 1) self.Button_0 = QtWidgets.QPushButton(self.gridLayoutWidget) self.Button_0.setStyleSheet("") self.Button_0.setObjectName("Button_0") self.gridLayout.addWidget(self.Button_0, 4, 2, 1, 1) self.Button_dengyu = QtWidgets.QPushButton(self.gridLayoutWidget) self.Button_dengyu.setObjectName("Button_dengyu") self.gridLayout.addWidget(self.Button_dengyu, 4, 3, 1, 1) self.retranslateUi(Dialog) QtCore.QMetaObject.connectSlotsByName(Dialog) def retranslateUi(self, Dialog): _translate = QtCore.QCoreApplication.translate Dialog.setWindowTitle(_translate("Dialog", "Dialog")) self.Edit_xianshi.setHtml(_translate("Dialog", "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0//EN\" \"http://www.w3.org/TR/REC-html40/strict.dtd\">\n" "<html><head><meta name=\"qrichtext\" content=\"1\" /><style type=\"text/css\">\n" "p, li { white-space: pre-wrap; }\n" "</style></head><body style=\" font-family:\'Aharoni\'; font-size:16pt; font-weight:72; font-style:normal;\">\n" "<p style=\" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;\"><span style=\" font-family:\'SimSun\'; font-weight:400;\">0</span></p></body></html>")) self.Button_6.setText(_translate("Dialog", "6")) self.Button_2.setText(_translate("Dialog", "2")) self.Button_3.setText(_translate("Dialog", "3")) self.Button_fenzhi.setText(_translate("Dialog", "1/^")) self.Button_pingfang.setText(_translate("Dialog", "^2")) self.Button_add.setText(_translate("Dialog", "+")) self.Button_jian.setText(_translate("Dialog", "-")) self.Button_9.setText(_translate("Dialog", "9")) self.Button_chu.setText(_translate("Dialog", "/")) self.Button_cheng.setText(_translate("Dialog", "*")) self.Button_8.setText(_translate("Dialog", "8")) self.Button_4.setText(_translate("Dialog", "4")) self.Button_esc.setText(_translate("Dialog", "esc")) self.Button_7.setText(_translate("Dialog", "7")) self.Button_1.setText(_translate("Dialog", "1")) self.Button_5.setText(_translate("Dialog", "5")) self.Button_xiaoshu.setText(_translate("Dialog", ".")) self.Button_0.setText(_translate("Dialog", "0")) self.Button_dengyu.setText(_translate("Dialog", "=")) if name == "main": import sys app = QtWidgets.QApplication(sys.argv) Dialog = QtWidgets.QDialog() ui = Ui_Dialog() ui.setupUi(Dialog) Dialog.show() sys.exit(app.exec_())
Rendering:
The above is the detailed content of A calculator method implemented by python3.5 + PyQt5 +Eric6 (with code). For more information, please follow other related articles on the PHP Chinese website!

本篇文章给大家带来了关于Python的相关知识,其中主要介绍了关于Seaborn的相关问题,包括了数据可视化处理的散点图、折线图、条形图等等内容,下面一起来看一下,希望对大家有帮助。

本篇文章给大家带来了关于Python的相关知识,其中主要介绍了关于进程池与进程锁的相关问题,包括进程池的创建模块,进程池函数等等内容,下面一起来看一下,希望对大家有帮助。

本篇文章给大家带来了关于Python的相关知识,其中主要介绍了关于简历筛选的相关问题,包括了定义 ReadDoc 类用以读取 word 文件以及定义 search_word 函数用以筛选的相关内容,下面一起来看一下,希望对大家有帮助。

VS Code的确是一款非常热门、有强大用户基础的一款开发工具。本文给大家介绍一下10款高效、好用的插件,能够让原本单薄的VS Code如虎添翼,开发效率顿时提升到一个新的阶段。

pythn的中文意思是巨蟒、蟒蛇。1989年圣诞节期间,Guido van Rossum在家闲的没事干,为了跟朋友庆祝圣诞节,决定发明一种全新的脚本语言。他很喜欢一个肥皂剧叫Monty Python,所以便把这门语言叫做python。

本篇文章给大家带来了关于Python的相关知识,其中主要介绍了关于数据类型之字符串、数字的相关问题,下面一起来看一下,希望对大家有帮助。

本篇文章给大家带来了关于Python的相关知识,其中主要介绍了关于numpy模块的相关问题,Numpy是Numerical Python extensions的缩写,字面意思是Python数值计算扩展,下面一起来看一下,希望对大家有帮助。


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function

Dreamweaver Mac version
Visual web development tools

ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment

SublimeText3 Mac version
God-level code editing software (SublimeText3)

mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),
