I am confused about the code in the instruction:
def by_three(x): return x % 3 == 0
Codeacademy never explicitly explained the "return if" structure, although I did come across one and get confused. In the code above, why does it return x? The way I read it is "return ??? if x is dividable by 3". How should I go about changing it if say I want it to return x ^ 2?