コード
def checkio(game_result):
magic_square = [8,1,6,3,5,7,4,9,2]
x = [0,0,0,0,0,0,0,0,0]
o = [0,0,0,0,0,0,0,0,0]
s = "".join(game_result)
for i in magic_square:
if s[magic_square.index(i)] == "X":
x[magic_square.index(i)] = i
elif s[magic_square.index(i)] == "O":
o[magic_square.index(i)] = i
for i in [[8,1,6],[3,5,7],[4,9,2],[8,3,4],[1,5,9],[6,7,2],[8,5,2],[6,5,4]]:
if set(x).issuperset(i):
print "X"
return 1
elif set(o).issuperset(i):
print "O"
return 1
else:
print "D"
if __name__ == '__main__':
checkio([u"X.O",u"XX.",u"XOO"])