how to setup Turtle python

import turtle
win = turtle.Screen()

import turtle
win = turtle.Turtle()

import turtle
window_Name = turtle.Sreen()
turtle_Name = turtle.Turtle()

from turtle import *
color('red', 'yellow')
begin_fill()
while True:
    forward(200)
    left(170)
    if abs(pos()) < 1:
        break
end_fill()
done()

import turtle
win = turtle.Screen()
win.bgcolor("black")
win.setup(Height=800, length=500)
win.title("setup")