学了一周的Python,这篇文章算是为这段时间自学做的小总结。
一、Python简介
Python是一门十分优美的脚本语言,如果学过java、c++那入门Python是非常简单的。Python具有丰富和强大的类库。它常被昵称为胶水语言,它能够很轻松的把用其他语言制作的各种模块(尤其是C/C++)轻松地联结在一起。常见的一种应用情形是,使用Python快速生成程序的原型(有时甚至是程序的最终界面),然后对其中有特别要求的部分,用更合适的语言改写。
二、Python版计算器的实现
工具准备:
1. Python2.7
2. wxPython
3. wxGlade界面编辑工具
4. pyCharm
具体配置什么的我就不说了,网上有很多。Python的GUI开发库有很多,这里我们使用wxPython。用wxGlade编辑界面,wxGlade是一款很好用的GUI编辑工具,它最大的优点是能自动生成编辑好的图形界面的代码。
这里主要介绍几点:
wx.TextCtrl(文本输入控件),这个作为计算器的显示屏,点击数字时用AppendText方法将数字添加至文本末尾,要取出数字时用GetValue方法,点击运算符时要将文本框中的数字清空(先存储)用Clear方法然后还有将操作符保存,点击等号后要将第二个操作数存储,然后用int方法将字符串转换为数字,计算后用SetValue方法将结果送入文本框,具体代码如下:
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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()
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按钮的ID,名称什么的我基本都是用wxGlade自动生成的。
没有做什么美化,只是为了练练手,给张图:
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服务器之家。
原文链接:http://blog.csdn.net/cyg0810/article/details/23865543