Red Cross with Python Turtle (Source Code)

The following red cross with Python and Turtle. You need to fill it with a color.

Source Code:

import turtle

screen = turtle.Screen()
screen.title('Red Cross - PythonTurtle.Academy')
screen.setup(1000,1000)
turtle.speed(0)
turtle.hideturtle()
turtle.color('red')

turtle.up()
turtle.goto(-450,-150)
turtle.down()
turtle.begin_fill()
for _ in range(4):
    turtle.fd(300)
    turtle.right(90)
    turtle.fd(300)
    turtle.left(90)
    turtle.fd(300)
    turtle.left(90)      
turtle.end_fill()