Abdirizak abdi wrote: > File "classifier.py", line 36, in combine > p1 = p1 * i > TypeError: unsupported operand type(s) for *: 'float' and 'list' The error is telling you that 'i' is a list. That means something in 'list_probabilities' is a list. Try to figure out why there is a list in the 'list_probabilities' list. Neil