python實現(xiàn)簡易版計算器

發(fā)布時間：2020-10-20 03:04:15 來源：腳本之家閱讀：147 作者：--BurningCodes-- 欄目：開發(fā)技術

學了一周的Python，這篇文章算是為這段時間自學做的小總結。

一、Python簡介

Python是一門十分優(yōu)美的腳本語言，如果學過java、c++那入門Python是非常簡單的。Python具有豐富和強大的類庫。它常被昵稱為膠水語言，它能夠很輕松的把用其他語言制作的各種模塊（尤其是C/C++）輕松地聯(lián)結在一起。常見的一種應用情形是，使用Python快速生成程序的原型（有時甚至是程序的最終界面），然后對其中有特別要求的部分，用更合適的語言改寫。

二、Python版計算器的實現(xiàn)

工具準備：

     1. Python2.7
        2. wxPython
        3. wxGlade界面編輯工具
        4. pyCharm

具體配置什么的我就不說了，網(wǎng)上有很多。Python的GUI開發(fā)庫有很多，這里我們使用wxPython。用wxGlade編輯界面，wxGlade是一款很好用的GUI編輯工具，它最大的優(yōu)點是能自動生成編輯好的圖形界面的代碼。

這里主要介紹幾點：

wx.TextCtrl（文本輸入控件），這個作為計算器的顯示屏，點擊數(shù)字時用AppendText方法將數(shù)字添加至文本末尾，要取出數(shù)字時用GetValue方法，點擊運算符時要將文本框中的數(shù)字清空（先存儲）用Clear方法然后還有將操作符保存，點擊等號后要將第二個操作數(shù)存儲，然后用int方法將字符串轉換為數(shù)字，計算后用SetValue方法將結果送入文本框，具體代碼如下：

import wx 
 
# begin wxGlade: extracode 
# end wxGlade 
 
 
class MyFrame(wx.Frame): 
 def __init__(self, *args, **kwds): 
 # begin wxGlade: MyFrame.__init__ 
 kwds["style"] = wx.DEFAULT_FRAME_STYLE 
 wx.Frame.__init__(self, *args, **kwds) 
 self.text_ctrl_1 = wx.TextCtrl(self, -1, "",style=wx.TE_READONLY) 
 self.button_37 = wx.Button(self, -1, "1") 
 self.button_38 = wx.Button(self, -1, "2") 
 self.button_39 = wx.Button(self, -1, "3") 
 self.button_40 = wx.Button(self, -1, "+") 
 self.button_41 = wx.Button(self, -1, "4") 
 self.button_42 = wx.Button(self, -1, "5") 
 self.button_43 = wx.Button(self, -1, "6") 
 self.button_44 = wx.Button(self, -1, "-") 
 self.button_46 = wx.Button(self, -1, "7") 
 self.button_45 = wx.Button(self, -1, "8") 
 self.button_47 = wx.Button(self, -1, "9") 
 self.button_48 = wx.Button(self, -1, "x") 
 self.button_49 = wx.Button(self, -1, "C") 
 self.button_50 = wx.Button(self, -1, "0") 
 self.button_51 = wx.Button(self, -1, "=") 
 self.button_52 = wx.Button(self, -1, "/") 
 
 self.__set_properties() 
 self.__do_layout() 
 
 self.Bind(wx.EVT_BUTTON, self.bu1, self.button_37) 
 self.Bind(wx.EVT_BUTTON, self.bu2, self.button_38) 
 self.Bind(wx.EVT_BUTTON, self.bu3, self.button_39) 
 self.Bind(wx.EVT_BUTTON, self.bu_plus, self.button_40) 
 self.Bind(wx.EVT_BUTTON, self.bu4, self.button_41) 
 self.Bind(wx.EVT_BUTTON, self.bu5, self.button_42) 
 self.Bind(wx.EVT_BUTTON, self.bu6, self.button_43) 
 self.Bind(wx.EVT_BUTTON, self.bu_min, self.button_44) 
 self.Bind(wx.EVT_BUTTON, self.bu7, self.button_46) 
 self.Bind(wx.EVT_BUTTON, self.bu8, self.button_45) 
 self.Bind(wx.EVT_BUTTON, self.bu9, self.button_47) 
 self.Bind(wx.EVT_BUTTON, self.bu_mul, self.button_48) 
 self.Bind(wx.EVT_BUTTON, self.bu_clear, self.button_49) 
 self.Bind(wx.EVT_BUTTON, self.bu0, self.button_50) 
 self.Bind(wx.EVT_BUTTON, self.bu_result, self.button_51) 
 self.Bind(wx.EVT_BUTTON, self.bu_chu, self.button_52) 
 # end wxGlade 
 self.Show(True) 
 
 def __set_properties(self): 
 # begin wxGlade: MyFrame.__set_properties 
 self.SetTitle("Python Calculater by CYG") 
 self.text_ctrl_1.SetMinSize((400, 50)) 
 self.button_37.SetMinSize((100, 50)) 
 self.button_38.SetMinSize((100, 50)) 
 self.button_39.SetMinSize((100, 50)) 
 self.button_40.SetMinSize((100, 50)) 
 self.button_41.SetMinSize((100, 50)) 
 self.button_42.SetMinSize((100, 50)) 
 self.button_43.SetMinSize((100, 50)) 
 self.button_44.SetMinSize((100, 50)) 
 self.button_46.SetMinSize((100, 50)) 
 self.button_45.SetMinSize((100, 50)) 
 self.button_47.SetMinSize((100, 50)) 
 self.button_48.SetMinSize((100, 50)) 
 self.button_49.SetMinSize((100, 50)) 
 self.button_50.SetMinSize((100, 50)) 
 self.button_51.SetMinSize((100, 50)) 
 self.button_52.SetMinSize((100, 50)) 
 # end wxGlade 
 
 def __do_layout(self): 
 # begin wxGlade: MyFrame.__do_layout 
 sizer_2 = wx.BoxSizer(wx.VERTICAL) 
 sizer_3 = wx.BoxSizer(wx.VERTICAL) 
 grid_sizer_1 = wx.GridSizer(4, 4, 0, 0) 
 sizer_3.Add(self.text_ctrl_1, 0, 0, 0) 
 grid_sizer_1.Add(self.button_37, 0, 0, 0) 
 grid_sizer_1.Add(self.button_38, 0, 0, 0) 
 grid_sizer_1.Add(self.button_39, 0, 0, 0) 
 grid_sizer_1.Add(self.button_40, 0, 0, 0) 
 grid_sizer_1.Add(self.button_41, 0, 0, 0) 
 grid_sizer_1.Add(self.button_42, 0, 0, 0) 
 grid_sizer_1.Add(self.button_43, 0, 0, 0) 
 grid_sizer_1.Add(self.button_44, 0, 0, 0) 
 grid_sizer_1.Add(self.button_46, 0, 0, 0) 
 grid_sizer_1.Add(self.button_45, 0, 0, 0) 
 grid_sizer_1.Add(self.button_47, 0, 0, 0) 
 grid_sizer_1.Add(self.button_48, 0, 0, 0) 
 grid_sizer_1.Add(self.button_49, 0, 0, 0) 
 grid_sizer_1.Add(self.button_50, 0, 0, 0) 
 grid_sizer_1.Add(self.button_51, 0, 0, 0) 
 grid_sizer_1.Add(self.button_52, 0, 0, 0) 
 sizer_3.Add(grid_sizer_1, 1, wx.EXPAND, 0) 
 sizer_2.Add(sizer_3, 1, wx.EXPAND, 0) 
 self.SetSizer(sizer_2) 
 sizer_2.Fit(self) 
 self.Layout() 
 # end wxGlade 
 
 def bu1(self, event): # wxGlade: MyFrame.<event_handler> 
 self.text_ctrl_1.AppendText("1") 
 event.Skip() 
 
 def bu2(self, event): # wxGlade: MyFrame.<event_handler> 
 self.text_ctrl_1.AppendText("2") 
 event.Skip() 
 
 def bu3(self, event): # wxGlade: MyFrame.<event_handler> 
 self.text_ctrl_1.AppendText("3") 
 event.Skip() 
 
 def bu_plus(self, event): # wxGlade: MyFrame.<event_handler> 
 self.num1=self.text_ctrl_1.GetValue() 
 self.op="+" 
 self.text_ctrl_1.Clear() 
 event.Skip() 
 
 def bu4(self, event): # wxGlade: MyFrame.<event_handler> 
 self.text_ctrl_1.AppendText("4") 
 event.Skip() 
 
 def bu5(self, event): # wxGlade: MyFrame.<event_handler> 
 self.text_ctrl_1.AppendText("5") 
 event.Skip() 
 
 def bu6(self, event): # wxGlade: MyFrame.<event_handler> 
 self.text_ctrl_1.AppendText("6") 
 event.Skip() 
 
 def bu_min(self, event): # wxGlade: MyFrame.<event_handler> 
 self.num1=self.text_ctrl_1.GetValue() 
 self.op="-" 
 self.text_ctrl_1.Clear() 
 event.Skip() 
 
 def bu7(self, event): # wxGlade: MyFrame.<event_handler> 
 self.text_ctrl_1.AppendText("7") 
 event.Skip() 
 
 def bu8(self, event): # wxGlade: MyFrame.<event_handler> 
 self.text_ctrl_1.AppendText("8") 
 event.Skip() 
 
 def bu9(self, event): # wxGlade: MyFrame.<event_handler> 
 self.text_ctrl_1.AppendText("9") 
 event.Skip() 
 
 def bu_mul(self, event): # wxGlade: MyFrame.<event_handler> 
 self.num1=self.text_ctrl_1.GetValue() 
 self.op="x" 
 self.text_ctrl_1.Clear() 
 event.Skip() 
 
 def bu_clear(self, event): # wxGlade: MyFrame.<event_handler> 
 self.text_ctrl_1.Clear() 
 event.Skip() 
 
 def bu0(self, event): # wxGlade: MyFrame.<event_handler> 
 self.text_ctrl_1.AppendText("0") 
 event.Skip() 
 
 def bu_chu(self, event): # wxGlade: MyFrame.<event_handler> 
 self.num1=self.text_ctrl_1.GetValue() 
 self.op="/" 
 self.text_ctrl_1.Clear() 
 event.Skip() 
 
 def bu_result(self, event): # wxGlade: MyFrame.<event_handler> 
 self.num2=self.text_ctrl_1.GetValue() 
 num1=int(self.num1) 
 num2=int(self.num2) 
 if self.op=="+": 
  self.text_ctrl_1.SetValue(str(num1+num2)) 
 elif self.op=="-": 
  self.text_ctrl_1.SetValue(str(num1-num2)) 
 elif self.op=="x": 
  self.text_ctrl_1.SetValue(str(num1*num2)) 
 elif self.op=="/": 
  self.text_ctrl_1.SetValue(str(num1/num2)) 
 event.Skip() 
 
 
# end of class MyFrame 
if __name__ == "__main__": 
 
 app=wx.App(False) 
 myframe=MyFrame(None) 
 app.MainLoop()

按鈕的ID，名稱什么的我基本都是用wxGlade自動生成的。
沒有做什么美化，只是為了練練手，給張圖：

python實現(xiàn)簡易版計算器

以上就是本文的全部內(nèi)容，希望對大家的學習有所幫助，也希望大家多多支持億速云。

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python實現(xiàn)簡易版計算器

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