[Python] I put no arguments in the final line, but I get this error: "TypeError: draw() takes...

I tried putting in all applicable arguments, leading to an error saying "thickness is not described"

import turtle

class Blocks:
def __init__(self, color, thickness):
self.color = color
self.thickness = thickness
turtle.color(self.color)
turtle.width(self.thickness)

def draw_square():
for i in range(4):
turtle.forward(100)
turtle.right(90)

def draw_legs():
ang_lst1 = [45, 135, 225]
ang_lst2 = [45, 315, 0]
n = 0
for i in range(3):
turtle.forward(100)
turtle.right(ang_lst1[n])
turtle.forward(56)
turtle.right(ang_lst2[n])
n += 1

def draw():
for i in range(2):
draw_square()
turtle.goto(-40, 40)
draw_legs()

red_block = Blocks('red', 5)

red_block.draw()

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