#coding: utf-8

"""
ZetCode wxPython tutorial

This program draws four rectangles filled
with gradients.

author: Jan Bodnar
website: zetcode.com
last edited: May 2018
"""
#グラジエントをつけた「塗り絵」はPaintDCのインスタンス
#のメソッドとして描画される。
#一般形：
#GradientFillLinear(self, rect, initialColour, destColour, nDirection=RIGHT)

import wx

class Example(wx.Frame):

    def __init__(self, *args, **kw):
        super(Example, self).__init__(*args, **kw)

        self.InitUI()

    def InitUI(self):

        self.Bind(wx.EVT_PAINT, self.OnPaint)

        self.SetTitle("Gradients")
        self.Centre()

    def OnPaint(self, event):

        dc = wx.PaintDC(self)

        dc.GradientFillLinear((20, 20, 180, 40), '#ffec00', '#000000', wx.NORTH)
        dc.GradientFillLinear((20, 80, 180, 40), '#ffec00', '#000000', wx.SOUTH)
        dc.GradientFillLinear((20, 140, 180, 40), '#ffec00', '#000000', wx.EAST)
        dc.GradientFillLinear((20, 200, 180, 40), '#ffec00', '#000000', wx.WEST)


def main():

    app = wx.App()
    ex = Example(None)
    ex.Show()
    app.MainLoop()


if __name__ == '__main__':
    main()

	実行例