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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def drawpoint(self, x, y, colour = None):
 """ Most elementary drawing, single pixel, used mainly for testing purposes. Coordinates are those of your initial image ! """

        self.checkforpilimage()
        colour = self.defaultcolour(colour)
        self.changecolourmode(colour)
        self.makedraw()
        
        (pilx, pily) = self.pilcoords((x,y))
        
        self.draw.point((pilx, pily), fill = colour)