Practice makes perfect - cube

#1

I was doing this exercise and wrote my code, but unfortunately there seems to be a mistake in my code. Could someone please help me see what’s the problem with it: I made sure all the indentations are correct.Thanks

def cube(n):
  return n**3
def by_three(n):
  if n % 3 == 0:
    return cube(n)
  else:
    print("False")
FAQ: Learn Python - Functions - Practice Makes Perfect
#2

what is the error you are getting? Which exercise is this? Please share exercise url

#3

Thanks for the response. The excercice is called “Practice makes Perfect”. It basically just tries to teach how to call a function within another one.
The error says: by_three(1) resulted none.

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#4

Looks like from the error message that you are supposed to return the result rather than print it.

1 Like
#5

None indicates the absence of a return value, as mentioned by midlinder, also, why return a string? Why not a Boolean?

1 Like
#6

The exercise, Functions: Practice Makes Perfect, includes this in the instructions:

if that number is divisible by 3, by_three should call cube(number) and return its result. Otherwise, by_three should return False .

So, yes, it is asking the user to return a boolean, namely False, under a specified circumstance.