I faced question below in py challenge. So i ran the code in sololearn compiler. The output was 34. Why?

Question

What is the output of this code?
def rec(n):
n%5
if n<=1:
return n
else:
return rec(n-1)+rec(n-2)
print(rec(9))

The answer in challenge was: 3

by Александр Громозонов

Answer 1

Should it maybe be:
n%=5
instead of:
n%5
which doesn't change anything?
Then the answer would be 3.

Answer 2

Yeah. I'm so sorry, it's my mistake, thank you very much.