# Help with the level "zig zag and zoom" in the Desert World

I am stuck in the level Zig Zag and Zoom, in the desert, and I just get stuck after the first zig-zag. I don’t understand what is wrong with my code so please help me understand what my error is so I will not make it again. =)

def mod15(n):
while n >= 15:
n -= 15
return n

# This function should return a value from 0 to 9:

def mod9(n):
# While n is greater or equal to 9, subtract 9 from n:
while n > 9:
n = n-9
return n

# Don’t change the following code:

while True:
time = hero.time
if time < 30:
y = 10 + 3 * mod15(time)
else:
y = 20 + 3 * mod9(time)
x = 10 + time
hero.moveXY(x, y)

Please format your code as it says in the faq (located in the task bar to the left of your profile in the top right corner)
Thanks,

1 Like
``````# Escape from Death Valley!
# Move by with a zigzag pattern using real modulo functions.

# This function returns a value from 0 to 15:
def mod15(n):
while n >= 15:
n -= 15
return n

# This function should return a value from 0 to 9:
def mod9(n):
# While n is greater or equal to 9, subtract 9 from n:
while n > 9:
n = n-9
return n

# Don't change the following code:
while True:
time = hero.time
if time < 30:
y = 10 + 3 * mod15(time)
else:
y = 20 + 3 * mod9(time)
x = 10 + time
hero.moveXY(x, y)

``````

You’re supposed to be pretty much copying the first function(mod15), into the second function(mod9) but with nine instead of fifteen. I can see 3 differences between them, 2 of the them matter and the other one doesn’t.

1 Like

It works! thx! =D

Mod edit: It’s great that you fixed it and figured it out but please don’t post final solutions.