falling skies part 5. 2

import turtle
import random

wn = turtle.Screen()
wn.title("Falling Skies by Charan")
wn.bgcolor("green")
wn.setup(width=800, height=600)
wn.tracer(0)

#Add the player
player = turtle.Turtle()
player.speed(0)
player.shape("square")
player.color("white")
player.penup()
player.goto(0, -250)
player.direction = "stop"

#Create a list of good_guys
good_guys = []

#Add the good_guy
for _ in range(20):
    good_guy = turtle.Turtle()
    good_guy.speed(0)
    good_guy.shape("circle")
    good_guy.color("blue")
    good_guy.penup()
    good_guy.goto(0, 250)
    good_guys.append(good_guy)

#Function
def go_left():
    player.direction = "left"

def go_right():
    player.direction = "right"


#Keyboard bindings
wn.listen()
wn.onkeypress(go_left, "Left")
wn.onkeypress(go_right, "Right")

#Main game loop
while True:
    #Update the screen
    wn.update()

    # Move the player
    if player.direction == "left":
        x = player.xcor()
        x -= 3
        player.setx(x)

    if player.direction == "right":
        x = player.xcor()
        x += 3
        player.setx(x)

    #Move the good_guys
    for good_guy in good_guys:
        y = good_guy.ycor()
        y -= 3
        good_guy.sety(y)

        #Check if off the screen
        if y < -300:
            x = random.randint(-380, 380)
            y = random.randint(300, 400)
            good_guy.goto(x, y)

        #Check for a collision with the player
        if good_guy.distance(player) < 20:
            x = random.randint(-380, 380)
            y = random.randint(300, 400)
            good_guy.goto(x, y)



wn.mainloop()