首页
所有分类
TAGS
文字工具 EMOJI BIBLE
编程 Python

python实现计算器简易版

Posted in Python onDecember 17, 2020

Python计算器加减乘除，供大家参考，具体内容如下

1、效果图

python实现计算器简易版

2、代码

# coding=utf-8

import sys
from PyQt5.QtWidgets import QApplication, QWidget, QPushButton, QGridLayout, QLCDNumber, QSlider, QVBoxLayout, qApp, \
  QMainWindow
from PyQt5.QtCore import Qt


class ForExample(QWidget):

  def __init__(self):
    super().__init__()
    #
    self.clu = 0.0
    # print('lx',type(self.clu))
    self.info = 0.0
    print(type(self.info))
    self.statusSUN = False
    self.statusPoint = False
    self.initUI()

  def initUI(self):

    # 网格布局
    grid = QGridLayout()
    self.setLayout(grid)

    # names = ['清除', '后退', '', '关闭',
    #     '7', '8', '9', '/',
    #     '4', '5', '6', '*',
    #     '1', '2', '3', '-',
    #     '0', '.', '=', '+']

    # 创建一个菜单栏
    # menubar = self.menuBar()
    # # 添加菜单
    # fileMenu = menubar.addMenu('&File')

    # LCD显示屏
    self.lcd = QLCDNumber(self)
    self.lcd.setDigitCount(9)
    self.lcd.isRightToLeft()
    self.lcd.display(self.info)
    grid.addWidget(self.lcd, 0, 0, 2, 4)

    # 清除
    bc = QPushButton('清除')
    bc.clicked.connect(self.def_bc)
    grid.addWidget(bc, 2, 0)

    # 后退
    bk = QPushButton('后退')
    bk.clicked.connect(self.def_bk)
    grid.addWidget(bk, 2, 1)

    # ca = QPushButton('计算')
    # ca.clicked.connect(self.def_bc)
    # grid.addWidget(ca, 2, 2)

    of = QPushButton('关闭')
    of.clicked.connect(qApp.quit)
    grid.addWidget(of, 2, 3)
    #
    b7 = QPushButton('7')
    b7.clicked.connect(self.def_b7)
    grid.addWidget(b7, 3, 0)

    b8 = QPushButton('8')
    b8.clicked.connect(self.def_b8)
    grid.addWidget(b8, 3, 1)

    b9 = QPushButton('9')
    b9.clicked.connect(self.def_b9)
    grid.addWidget(b9, 3, 2)

    b4 = QPushButton('4')
    b4.clicked.connect(self.def_b4)
    grid.addWidget(b4, 4, 0)

    b5 = QPushButton('5')
    b5.clicked.connect(self.def_b5)
    grid.addWidget(b5, 4, 1)

    b6 = QPushButton('6')
    b6.clicked.connect(self.def_b6)
    grid.addWidget(b6, 4, 2)

    bExcept = QPushButton('/')
    bExcept.clicked.connect(self.def_bExcept)
    grid.addWidget(bExcept, 3, 3)

    bMultiply = QPushButton('*')
    bMultiply.clicked.connect(self.def_bMultiply)
    grid.addWidget(bMultiply, 4, 3)

    b1 = QPushButton('1')
    b1.clicked.connect(self.def_b1)
    grid.addWidget(b1, 5, 0)

    b2 = QPushButton('2')
    b2.clicked.connect(self.def_b2)
    grid.addWidget(b2, 5, 1)

    b3 = QPushButton('3')
    b3.clicked.connect(self.def_b3)
    grid.addWidget(b3, 5, 2)

    bLess = QPushButton('-')
    bLess.clicked.connect(self.def_bLess)
    grid.addWidget(bLess, 5, 3)

    b0 = QPushButton('0')
    b0.clicked.connect(self.def_b0)
    grid.addWidget(b0, 6, 0)

    bPoint = QPushButton('.')
    bPoint.clicked.connect(self.def_bPoint)
    grid.addWidget(bPoint, 6, 1)

    bsun = QPushButton('+')
    bsun.clicked.connect(self.def_bsun)
    grid.addWidget(bsun, 6, 3)

    bsun = QPushButton('=')
    bsun.clicked.connect(self.def_bresult)
    grid.addWidget(bsun, 6, 2)

    self.setGeometry(300, 300, 250, 250)
    self.show()

  #############################################################
  def def_bc(self):

    self.info = 0
    self.clu = 0
    self.statusSUN = False
    self.lcd.display(self.info)

  def def_bk(self):

    if len(str(self.info)) > 1:
      self.info = int(str(self.info)[:-1])
    else:
      self.info = 0

    self.lcd.display(self.info)

  def def_b7(self):

    if self.info == 0:
      self.info = 7
    else:
      self.info = int(str(self.info) + '7')

    self.statusSUN = False
    self.lcd.display(self.info)

  def def_b8(self):

    if self.info == 0:
      self.info = 8
    else:
      self.info = int(str(self.info) + '8')

    self.statusSUN = False
    self.lcd.display(self.info)

  def def_b9(self):

    if self.info == 0:
      self.info = 9
    else:
      self.info = int(str(self.info) + '9')

    self.statusSUN = False
    self.lcd.display(self.info)

  # 除
  def def_bExcept(self):
    pass

  def def_b4(self):

    if self.info == 0:
      self.info = 4
    else:
      self.info = int(str(self.info) + '4')

    self.statusSUN = False
    self.lcd.display(self.info)

  def def_b5(self):

    if self.info == 0:
      self.info = 5
    else:
      self.info = int(str(self.info) + '5')

    self.statusSUN = False
    self.lcd.display(self.info)

  def def_b6(self):

    if self.info == 0:
      self.info = 6
    else:
      self.info = int(str(self.info) + '6')

    self.statusSUN = False
    self.lcd.display(self.info)

  # 乘
  def def_bMultiply(self):
    pass

  def def_b1(self):

    if self.info == 0:
      self.info = 1
    else:
      self.info = int(str(self.info) + '1')

    self.statusSUN = False
    self.lcd.display(self.info)

  def def_b2(self):

    if self.info == 0:
      self.info = 2
    else:
      self.info = int(str(self.info) + '2')

    self.statusSUN = False
    self.lcd.display(self.info)

  def def_b3(self):

    if self.info == 0:
      self.info = 3
    else:
      self.info = int(str(self.info) + '3')

    self.statusSUN = False
    self.lcd.display(self.info)

  # 减
  def def_bLess(self):
    pass

  def def_b0(self):

    if self.info == 0:
      self.info = 0
    else:
      self.info = int(str(self.info) + '0')

    self.statusSUN = False
    self.lcd.display(self.info)

  def def_bPoint(self):
    if self.statusPoint:
      pass
    else:
      self.statusPoint = True

    if self.info == 0:
      self.info = 0.
    else:
      self.info = int(str(self.info) + '.')

    self.statusSUN = False
    self.lcd.display(self.info)

  # 等于，根据self.status判断输入的计算符号
  def def_bresult(self):

    self.clu += self.info
    self.lcd.display(self.clu)
    self.statusSUN = False
    self.info = 0

  # 加
  def def_bsun(self):

    self.clu += self.info
    self.lcd.display(self.clu)
    self.statusSUN = True
    self.info = 0


if __name__ == '__main__':
  app = QApplication(sys.argv)
  fe = ForExample()
  sys.exit(app.exec_()) # coding=utf-8

import sys
from PyQt5.QtWidgets import QApplication, QWidget, QPushButton, QGridLayout, QLCDNumber, QSlider, QVBoxLayout, qApp, \
  QMainWindow
from PyQt5.QtCore import Qt


class ForExample(QWidget):

  def __init__(self):
    super().__init__()
    #
    self.clu = 0.0
    # print('lx',type(self.clu))
    self.info = 0.0
    print(type(self.info))
    self.statusSUN = False
    self.statusPoint = False
    self.initUI()

  def initUI(self):

    # 网格布局
    grid = QGridLayout()
    self.setLayout(grid)

    # names = ['清除', '后退', '', '关闭',
    #     '7', '8', '9', '/',
    #     '4', '5', '6', '*',
    #     '1', '2', '3', '-',
    #     '0', '.', '=', '+']

    # 创建一个菜单栏
    # menubar = self.menuBar()
    # # 添加菜单
    # fileMenu = menubar.addMenu('&File')

    # LCD显示屏
    self.lcd = QLCDNumber(self)
    self.lcd.setDigitCount(9)
    self.lcd.isRightToLeft()
    self.lcd.display(self.info)
    grid.addWidget(self.lcd, 0, 0, 2, 4)

    # 清除
    bc = QPushButton('清除')
    bc.clicked.connect(self.def_bc)
    grid.addWidget(bc, 2, 0)

    # 后退
    bk = QPushButton('后退')
    bk.clicked.connect(self.def_bk)
    grid.addWidget(bk, 2, 1)

    # ca = QPushButton('计算')
    # ca.clicked.connect(self.def_bc)
    # grid.addWidget(ca, 2, 2)

    of = QPushButton('关闭')
    of.clicked.connect(qApp.quit)
    grid.addWidget(of, 2, 3)
    #
    b7 = QPushButton('7')
    b7.clicked.connect(self.def_b7)
    grid.addWidget(b7, 3, 0)

    b8 = QPushButton('8')
    b8.clicked.connect(self.def_b8)
    grid.addWidget(b8, 3, 1)

    b9 = QPushButton('9')
    b9.clicked.connect(self.def_b9)
    grid.addWidget(b9, 3, 2)

    b4 = QPushButton('4')
    b4.clicked.connect(self.def_b4)
    grid.addWidget(b4, 4, 0)

    b5 = QPushButton('5')
    b5.clicked.connect(self.def_b5)
    grid.addWidget(b5, 4, 1)

    b6 = QPushButton('6')
    b6.clicked.connect(self.def_b6)
    grid.addWidget(b6, 4, 2)

    bExcept = QPushButton('/')
    bExcept.clicked.connect(self.def_bExcept)
    grid.addWidget(bExcept, 3, 3)

    bMultiply = QPushButton('*')
    bMultiply.clicked.connect(self.def_bMultiply)
    grid.addWidget(bMultiply, 4, 3)

    b1 = QPushButton('1')
    b1.clicked.connect(self.def_b1)
    grid.addWidget(b1, 5, 0)

    b2 = QPushButton('2')
    b2.clicked.connect(self.def_b2)
    grid.addWidget(b2, 5, 1)

    b3 = QPushButton('3')
    b3.clicked.connect(self.def_b3)
    grid.addWidget(b3, 5, 2)

    bLess = QPushButton('-')
    bLess.clicked.connect(self.def_bLess)
    grid.addWidget(bLess, 5, 3)

    b0 = QPushButton('0')
    b0.clicked.connect(self.def_b0)
    grid.addWidget(b0, 6, 0)

    bPoint = QPushButton('.')
    bPoint.clicked.connect(self.def_bPoint)
    grid.addWidget(bPoint, 6, 1)

    bsun = QPushButton('+')
    bsun.clicked.connect(self.def_bsun)
    grid.addWidget(bsun, 6, 3)

    bsun = QPushButton('=')
    bsun.clicked.connect(self.def_bresult)
    grid.addWidget(bsun, 6, 2)

    self.setGeometry(300, 300, 250, 250)
    self.show()

  #############################################################
  def def_bc(self):

    self.info = 0
    self.clu = 0
    self.statusSUN = False
    self.lcd.display(self.info)

  def def_bk(self):

    if len(str(self.info)) > 1:
      self.info = int(str(self.info)[:-1])
    else:
      self.info = 0

    self.lcd.display(self.info)

  def def_b7(self):

    if self.info == 0:
      self.info = 7
    else:
      self.info = int(str(self.info) + '7')

    self.statusSUN = False
    self.lcd.display(self.info)

  def def_b8(self):

    if self.info == 0:
      self.info = 8
    else:
      self.info = int(str(self.info) + '8')

    self.statusSUN = False
    self.lcd.display(self.info)

  def def_b9(self):

    if self.info == 0:
      self.info = 9
    else:
      self.info = int(str(self.info) + '9')

    self.statusSUN = False
    self.lcd.display(self.info)

  # 除
  def def_bExcept(self):
    pass

  def def_b4(self):

    if self.info == 0:
      self.info = 4
    else:
      self.info = int(str(self.info) + '4')

    self.statusSUN = False
    self.lcd.display(self.info)

  def def_b5(self):

    if self.info == 0:
      self.info = 5
    else:
      self.info = int(str(self.info) + '5')

    self.statusSUN = False
    self.lcd.display(self.info)

  def def_b6(self):

    if self.info == 0:
      self.info = 6
    else:
      self.info = int(str(self.info) + '6')

    self.statusSUN = False
    self.lcd.display(self.info)

  # 乘
  def def_bMultiply(self):
    pass

  def def_b1(self):

    if self.info == 0:
      self.info = 1
    else:
      self.info = int(str(self.info) + '1')

    self.statusSUN = False
    self.lcd.display(self.info)

  def def_b2(self):

    if self.info == 0:
      self.info = 2
    else:
      self.info = int(str(self.info) + '2')

    self.statusSUN = False
    self.lcd.display(self.info)

  def def_b3(self):

    if self.info == 0:
      self.info = 3
    else:
      self.info = int(str(self.info) + '3')

    self.statusSUN = False
    self.lcd.display(self.info)

  # 减
  def def_bLess(self):
    pass

  def def_b0(self):

    if self.info == 0:
      self.info = 0
    else:
      self.info = int(str(self.info) + '0')

    self.statusSUN = False
    self.lcd.display(self.info)

  def def_bPoint(self):
    if self.statusPoint:
      pass
    else:
      self.statusPoint = True

    if self.info == 0:
      self.info = 0.
    else:
      self.info = int(str(self.info) + '.')

    self.statusSUN = False
    self.lcd.display(self.info)

  # 等于，根据self.status判断输入的计算符号
  def def_bresult(self):

    self.clu += self.info
    self.lcd.display(self.clu)
    self.statusSUN = False
    self.info = 0

  # 加
  def def_bsun(self):

    self.clu += self.info
    self.lcd.display(self.clu)
    self.statusSUN = True
    self.info = 0


if __name__ == '__main__':
  app = QApplication(sys.argv)
  fe = ForExample()
  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三水点靠木。

python实现计算器简易版

- Author -

ztq666666

声明：登载此文出于传递更多信息之目的，并不意味着赞同其观点或证实其描述。

Python 相关文章推荐
python实现apahce网站日志分析示例
Apr 02 Python
在Python程序中操作文件之isatty()方法的使用教程
May 24 Python
详解如何使用Python编写vim插件
Nov 28 Python
Python实现PS图像调整黑白效果示例
Jan 25 Python
详解Python使用tensorflow入门指南
Feb 09 Python
python实现NB-IoT模块远程控制
Jun 20 Python
python 2.7 检测一个网页是否能正常访问的方法
Dec 26 Python
Python面向对象之多态原理与用法案例分析
Dec 30 Python
python enumerate内置函数用法总结
Jan 07 Python
已安装tensorflow-gpu,但keras无法使用GPU加速的解决
Feb 07 Python
Pandas直接读取sql脚本的方法
Jan 21 Python
python爬虫beautifulsoup库使用操作教程全解(python爬虫基础入门)
Feb 19 Python
利用Python实现自动扫雷小脚本
Dec 17 #Python
用python读取xlsx文件
Dec 17 #Python
Python实现自动整理文件的脚本
Dec 17 #Python
Python用access判断文件是否被占用的实例方法
Dec 17 #Python
Python实例教程之检索输出月份日历表
Dec 16 #Python
使用Python判断一个文件是否被占用的方法教程
Dec 16 #Python
python中类与对象之间的关系详解
Dec 16 #Python
信息校验(1) Coroutine(1) 静态压缩(1) greenlet(1) gevent(1) pytest(3) csv(4) 自动播放(1) 正则表达式(3) Excel(4)
You might like
PHP的Yii框架中使用数据库的配置和SQL操作实例教程
2016/03/17 PHP
yii2 页面底部加载css和js的技巧
2016/04/21 PHP
php实现websocket实时消息推送
2018/03/30 PHP
asp 的 分词实现代码
2007/05/24 Javascript
javascript 装载iframe子页面，自适应高度
2009/03/20 Javascript
jquery的live使用注意事项
2014/02/18 Javascript
window.onload与$(document).ready()的区别分析
2015/05/30 Javascript
JavaScript实现强制重定向至HTTPS页面
2015/06/10 Javascript
详解JavaScript中的4种类型识别方法
2015/09/14 Javascript
jquery实现简单的表单验证
2015/11/17 Javascript
解决js页面滚动效果scrollTop在FireFox与Chrome浏览器间的兼容问题的方法
2015/12/03 Javascript
Nodejs如何搭建Web服务器
2016/03/28 NodeJs
Node.js连接MongoDB数据库产生的问题
2017/02/08 Javascript
JavaScript和jQuery制作光棒效果
2017/02/24 Javascript
百度地图JavascriptApi Marker平滑移动及车头指向行径方向
2017/03/13 Javascript
JS+CSS实现网页加载中的动画效果
2017/10/27 Javascript
Javascript中从学习bind到实现bind的过程
2018/01/05 Javascript
Vue项目数据动态过滤实践及实现思路
2018/09/11 Javascript
js中事件对象和事件委托的介绍
2019/01/21 Javascript
微信小程序使用canvas自适应屏幕画海报并保存图片功能
2019/07/25 Javascript
layui form表单提交后实现自动刷新
2019/10/25 Javascript
node运行js获得输出的三种方式示例详解
2020/07/02 Javascript
[01:54]TI珍贵瞬间系列（三）：翻盘
2020/08/28 DOTA
Python3基于sax解析xml操作示例
2018/05/22 Python
详解python列表生成式和列表生成式器区别
2019/03/27 Python
pytorch 常用线性函数详解
2020/01/15 Python
django 实现手动存储文件到model的FileField
2020/03/30 Python
Python自省及反射原理实例详解
2020/07/06 Python
毕业生个人求职的自我评价
2013/10/28 职场文书
法学毕业生自我鉴定
2013/11/08 职场文书
不假外出检讨书
2014/01/27 职场文书
出纳员岗位责任制
2014/02/11 职场文书
销售员试用期自我评价
2014/09/15 职场文书
2015仓库保管员年终工作总结
2015/05/13 职场文书
Nginx配置并兼容HTTP实现代码解析
2021/03/31 Servers
Python中super().__init__()测试以及理解
2021/12/06 Python