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2014火车票查询代码分享
Jan 10 Python
python网络编程学习笔记(二)：socket建立网络客户端
Jun 09 Python
对于Python异常处理慎用“except:pass”建议
Apr 02 Python
python fabric实现远程部署
Jan 05 Python
详解python中的Turtle函数库
Nov 19 Python
Python 从相对路径下import的方法
Dec 04 Python
python sort、sort_index方法代码实例
Mar 28 Python
Python PIL图片添加字体的例子
Aug 22 Python
Python 读取用户指令和格式化打印实现解析
Sep 02 Python
在echarts中图例legend和坐标系grid实现左右布局实例
May 16 Python
Python3+SQLAlchemy+Sqlite3实现ORM教程
Feb 16 Python
Pandas自定义选项option设置
Jul 25 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
URL重定向(3) lnmp(1) 跨域(4) 二级域名(1) 443(1) lamp(1) 前后端分离(1) Centos(8) SSL(3) 压力测试(1)
You might like
PHP4(windows版本)中的COM函数
2006/10/09 PHP
php下实现折线图效果的代码
2007/04/28 PHP
php项目打包方法
2008/02/18 PHP
PHP和Mysqlweb应用开发核心技术－第1部分 Php基础－2 php语言介绍
2011/07/03 PHP
JAVASCRIPT对象及属性
2007/02/13 Javascript
javascript面向对象入门基础详细介绍
2012/09/05 Javascript
js原生appendChild的bug解决心得分享
2013/07/01 Javascript
基于jquery fly插件实现加入购物车抛物线动画效果
2016/04/05 Javascript
JavaScript实现类似淘宝的购物车效果
2017/03/16 Javascript
详谈js使用in和hasOwnProperty获取对象属性的区别
2017/04/25 Javascript
Javascript中prototype与__proto__的关系详解
2018/03/11 Javascript
JavaScript 判断对象中是否有某属性的常用方法
2018/06/14 Javascript
小程序hover-class点击态效果实现
2019/02/26 Javascript
[59:30]完美世界DOTA2联赛PWL S3 access vs LBZS 第二场 12.20
2020/12/23 DOTA
实例解析Python的Twisted框架中Deferred对象的用法
2016/05/25 Python
Python实现的寻找前5个默尼森数算法示例
2018/03/25 Python
wx.CheckBox创建复选框控件并响应鼠标点击事件
2018/04/25 Python
使用python3+xlrd解析Excel的实例
2018/05/04 Python
python操作openpyxl导出Excel 设置单元格格式及合并处理代码实例
2019/08/27 Python
Python的缺点和劣势分析
2019/11/19 Python
python NumPy ndarray二维数组 按照行列求平均实例
2019/11/26 Python
CSS3 实现倒计时效果
2020/11/25 HTML / CSS
HTML5 Canvas玩转酷炫大波浪进度图效果实例（附demo）
2016/12/14 HTML / CSS
canvas像素点操作之视频绿幕抠图
2018/09/11 HTML / CSS
求网格中的黑点分布
2013/11/06 面试题
高级Java程序员面试题
2016/06/23 面试题
医护人员英文求职信范文
2013/11/26 职场文书
一份创业计划书范文
2014/02/08 职场文书
安全生产责任书范本
2014/04/15 职场文书
全国税务系统先进集体事迹材料
2014/05/19 职场文书
住房租房协议书
2014/08/20 职场文书
2014教师专业技术工作总结
2014/12/03 职场文书
开会通知
2015/04/20 职场文书
一百条裙子读书笔记
2015/07/01 职场文书
教你怎么用python selenium实现自动化测试
2021/05/27 Python
Golang 链表的学习和使用
2022/04/19 Golang