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() |
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
