i have this code, but i don't know how to loop this code. please somebody help me :(

Code:
import turtle
turtle.bgcolor("black")
turtle.pensize(5)

turtle.penup()
turtle.goto(-415,100)
turtle.begin_fill()
turtle.color("FireBrick")
turtle.pendown()
turtle.goto(-450,50)
turtle.goto(-450,-350)
turtle.goto(-380,-350)
turtle.goto(-380,50)
turtle.goto(-415,100)
...