Code Fight Python (incorrect)

codefights.py

import pprint

def CodeFight(n):
    lst = []
    for x in xrange(1,n+1):
        if x % 5 == 0:
            o = "Code"
        elif x % 7 == 0:
            o = "Fight"
        else:
            o = str(x)
        lst.append(o)
    pp = pprint.PrettyPrinter(indent=0)
    return pp.pprint(lst)