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Python

Robert Baucus
Robert Baucus
3,400 Points
Posted by Robert Baucus
Robert Baucus
3,400 Points

Combiner.py (OO Python), can't figure why it's adding my numbers as strings...

So I got the program to work in my IDE (sort of) but it keeps giving me the numbers added together as a string (i.e. concatenated instead of combined in to a sum). There is something super basic that is wrong here but I can't see the forest for the trees.

Any thoughts Innernet friends?

def combiner(list):
    number_output = 0
    output = []
    for i in list:
        if isinstance(i, str):
            output.append(i)
        elif isinstance(i, int) or isinstance(i, float):
            number_output += i
    return "".join(output) + str(number_output)


print(combiner(['dog', 'apple' '5', '4.5']))

# yields: dogapple54.50
instances.py

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,457 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,457 Points

The combiner is only testing if the instance is an actual int before adding them. There is not conversion to an int or float. Your test data contains no integers. Try calling the code with `print(combiner(['dog', 'apple' 5, 4.5])).

Post back if you need more help. Good Luck!!

Robert Baucus
Robert Baucus
3,400 Points
Robert Baucus
Robert Baucus
3,400 Points

I completely missed that I had put '5' in the arguments, thanks!