Same solution posted twice. Both with the same bug in python3 and useless comparison in python2.

This solution does not work for python3 and args (11, 1). You get
TypeError: unorderable types: int() > NoneType()

for the line
if tmp_result > result or result is None:

The comparisons should be interchanged (first test if result is None). I.e. the if statement is worthless in python2 and raises an error in python3.