看到别人写口算生成器，我就有点蠢蠢欲动了（ @cht ）
运行界面如下

注：如需运行，请使用python3并下载wxpython库

import wx
import wx.xrc
import random

class MyDialog1 ( wx.Dialog ):

    x=123
    y=321
    tot=0
    zq=0
    def __init__( self, parent ):
        wx.Dialog.__init__ ( self, parent, id = wx.ID_ANY, title = wx.EmptyString, pos = wx.DefaultPosition, size = wx.Size( 400,200 ), style = wx.DEFAULT_DIALOG_STYLE )

        self.SetSizeHintsSz( wx.DefaultSize, wx.DefaultSize )

        bSizer1 = wx.BoxSizer( wx.VERTICAL )

        self.m_staticText1 = wx.StaticText( self, wx.ID_ANY, u"123+321", wx.DefaultPosition, wx.DefaultSize, 0 )
        self.m_staticText1.Wrap( -1 )
        self.m_staticText1.SetFont( wx.Font( 36, 70, 90, 90, False, "宋体" ) )

        bSizer1.Add( self.m_staticText1, 0, wx.ALL, 5 )

        self.m_textCtrl1 = wx.TextCtrl( self, wx.ID_ANY, u"在此输入您的答案", wx.DefaultPosition, wx.DefaultSize, wx.TE_PROCESS_ENTER )
        bSizer1.Add( self.m_textCtrl1, 0, wx.ALL, 5 )

        self.m_button2 = wx.Button( self, wx.ID_ANY, u"提交", wx.DefaultPosition, wx.DefaultSize, 0 )
        bSizer1.Add( self.m_button2, 0, wx.ALL, 5 )

        self.m_staticText2 = wx.StaticText( self, wx.ID_ANY, u"", wx.DefaultPosition, wx.DefaultSize, 0 )
        self.m_staticText2.Wrap( -1 )
        bSizer1.Add( self.m_staticText2, 0, wx.ALL, 5 )


        self.SetSizer( bSizer1 )
        self.Layout()

        self.Centre( wx.BOTH )

        # Connect Events
        self.m_textCtrl1.Bind( wx.EVT_TEXT_ENTER, self.tj )
        self.m_button2.Bind( wx.EVT_BUTTON, self.tj )

    def __del__( self ):
        pass


    def tj( self, event ):
        self.tot+=1
        ans=self.m_textCtrl1.Value
        try:
            if eval(ans)==self.x+self.y:
                self.zq+=1
                self.m_staticText2.Label='答案正确'+'   正确率：'+str(self.zq)+'/'+str(self.tot)
            else:
                self.m_staticText2.Label='答案错误'+'   正确率：'+str(self.zq)+'/'+str(self.tot)
        except:
            self.m_staticText2.Label='输入错误'+'   正确率：'+str(self.zq)+'/'+str(self.tot)
        else:
            pass
        self.m_textCtrl1.Value=''
        self.x=random.choice(range(1000))
        self.y=random.choice(range(1000))

        self.m_staticText1.Label=str(self.x)+'+'+str(self.y)


app=wx.App(False)
zjm=MyDialog1(None)
zjm.Show(True)
app.MainLoop()