Why is there an error saying I haven't defined the function "is_even"?

Question

def is_even(answer):
    answered = X % 2 ==0
    if answer ==  answered:
        return "yep"
    else:
        return "nope"

the instructions are: Write a function called is_even that takes one input, x, and returns the string "yep" if the input is even and "nope" otherwise. You do not need to call the function.

Answer 1

It's most likely a compile error, as you never introduce X. Also, you should read the instructions again. It clearly says what the input should be (x). So the method should start like the following:

def is_even(x):
  if ...:
    return "yep"
  else:
    return "nope"