from turtle import *

penup()

fillcolor("red") 
begin_fill()
forward(100)
left(90)
forward(100)
left(90)
forward(100)
left(90)
forward(100)
left(90)
end_fill()

fillcolor("white")
goto(10,35)
begin_fill()
forward(25)
right(90)
forward(25)
left(90)
forward(30)
left(90)
forward(25)
right(90)
forward(25)
left(90)
forward(30)
left(90)
forward(25)
right(90)
forward(25)
left(90)
forward(30)
left(90)
end_fill()

# oder kürzer:
from turtle import *

penup()

fillcolor("red") 
begin_fill()
for i in range(4):
  forward(100)
  left(90)
end_fill()

fillcolor("white")
goto(10,35)
begin_fill()
for i in range(4):
  forward(25)
  right(90)
  forward(25)
  left(90)
  forward(30)
  left(90)
end_fill()