Using classes-TypeError: Unbound must be called as body instance...

[kevow123]

TypeError: unbound method draw() must be called with Body instance as first argument (got Turtle instance instead)

I get that error when I attempt to run my program in python. I have to use the turtle module to draw the body of a car with body class. The class needs to have a init method and a draw method. The init method is supposed to determine fill color and draw is supposed to draw the object.

heres some of my code:

pen=turtle.Turtle()
class Body(object):
    def __init__(self,fillcolor=''):
        self.fillcolor=fillcolor
 
    def draw(self,pen,size=80):
        """draw the body of your car of given size using pen size is car length/2; fill it if fillcolor is provided"""
 
        if self.fillcolor:
            pen.fillcolor(self.fillcolor)
            pen.fill(True)
        #draw the Body
 

The rest of the code in the draw method is code that draws the body and it works when I separate it from the class in a different program. And it doesn't show but i have imported math and turtle.

        pen.down()
        pen.forward(size*3/2)
        pen.left(45)
        pen.forward(size/2*math.sqrt(2))
        pen.left(90)
        pen.forward(size/2*math.sqrt(2))
        pen.left(45)
        pen.forward(size*3/2)
        pen.right(45)
        pen.forward(size/2*math.sqrt(2))
        pen.left(45)
        pen.forward(size*5/4)
        pen.left(45)
        pen.forward(size*1/4*math.sqrt(2))
        pen.left(45)
        pen.forward(size)
        pen.left(45)
        pen.forward(size*1/4*math.sqrt(2))
        pen.left(45)
        pen.forward(size*7/4)
        pen.fill(False)                 # end filling
 

[bvdet]

You did not show how you called Body(). It should work if you instantiated Body() and called method draw() like this:

obj = Body()
obj.draw(pen)

[kevow123]

thank you very much