4.Python画一个五子棋棋盘

#画一个五子棋棋盘
import wx
class myFrame(wx.Frame):
    def __init__(self):
        self.unit = 30
        self.dotnum = 15
        super().__init__\
            (parent=None,pos=[100,100],
             size=[self.unit*self.dotnum
                   +self.unit+20,
                   self.unit*self.dotnum
                   +self.unit+30+20],
             title="商贾三国")
        self.SetIcon(wx.Icon("WeatherBundle.ico"))
        self.panel = wx.Panel(self)
        self.panel.SetBackgroundColour((220, 210, 0))
        self.panel.Bind(wx.EVT_PAINT,self.draw)
        self.Show()
    def draw(self,event):
        mydc=wx.PaintDC(self.panel)
        unit=self.unit
        dotnum=self.dotnum
        x=unit
        y=unit
        for i in range(1,dotnum+1):
            mydc.DrawLine(x,y,x,unit*dotnum)
            x=x+unit
        x=unit
        for i in range(1,dotnum+1):
            mydc.DrawLine(x, y, unit*dotnum, y)
            y=y+unit
myapp=wx.App()
myframe=myFrame()
myapp.MainLoop()