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PyQt5实现简易计算器

转载 作者：qq735679552 更新时间：2022-09-28 22:32:09 27 4
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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:

PyQt5实现简易计算器

界面代码 。

calc_interface.py 。

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# -*- 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 。

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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我.

原文链接：https://blog.csdn.net/TQCAI666/article/details/80532034 。

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