Probably a bug
I would like to give some feedback about the test #2
From: https://py.checkio.org/mission/restricted-sum/solve/
HTTP_USER_AGENT:
Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36
My code:
def checkio(data): global s a = data.pop() s = s + a if data != []: return checkio(data) else: return s
Second test returns 18, but in console is the right answer, 12.