Simple object example in DrawBot

square.py

class Square(object):
    
    fillColor = 1, 0, 0
    
    def __init__(self, side):
        self.side = side
    
    def draw(self, pos):
        x, y = pos
        fill(*self.fillColor)
        rect(x, y, self.side, self.side)
        
S = Square(200)
S.draw((120, 200))

S.fillColor = 0, 1, 0
S.draw((300, 500))