What is wrong in code

Question

from turtle import *
from random import randrange
from freegames import square,vector

food=vector(0,0)
snake=[vector(10,0)]
aim=vector(0,-10)

def change(x,y):
aim.x=x
aim.y=y

def inside(head):
return -200 <head.x <190 and -200 <head.y<190

def move():
head=snake[-1].copy()
head.move(aim)

if not inside(head) or head in snake:
square(head.x,head.y,9,'red')
update()
return

snake.append()

if head==food:
print('snake',len(snake))
food.x=randrange(-15.15)*10
food.y=randrange(-15.15)*10

else:
snake.pop(0)

clear()

for body in snake:
sqare(body.x,body.y.9'green')

sqare(food.x,food.y,9,'red')
update()
ontimer(move, 100)

Answer 1

I am requesting you to post the code as a code bit. So that it is easy for us to handle and find error