Yep, I wrote it again and it worked. I don't know. Maybe something to do with mixture of tab & 4 spaces?
By the way, thank you for helping, Chrono79.

I don't know.
Here, I see it as you, indented 4 extra spaces regarding the variable above, but in the coding space it has the same indentation.
I don't understand it.

Sorry. I am still editing it. Forgot to format for code, and then indentation changed, but I swear mine was ok :D :D

Hi,

Newbie here. Sorry if it's not the right place to put this.
I wrote a pair of statements to break the ice and tested.
I passed 2 tests that shouldn't (the ones expecting None)
Python code:

def first_non_consecutive(arr):
    first = arr[0]
    print(first)

I suppose it's because I made the program print instead of return, and even when I print something wrong, I don't return anything (and this is = None?)
Just to let the author know.

Thanks for this kata!