Odpowiedź:
from turtle import *
penup()
goto(-150,-150)
color('black')
width(5)
right(90)
n=5
k=30
for _ in range(5):
for _ in range(n):
for _ in range(2):
pendown()
left(90)
forward(60)
left(90)
forward(30)
penup()
left(90)
forward(60)
right(90)
n=n-1
goto(-150+k,-150+k)
k=k+30
hideturtle()