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Python

Andrew Bruce
Andrew Bruce
7,822 Points
Posted by Andrew Bruce
Andrew Bruce
7,822 Points

Code works on my machine but doesn't satisfy the challenge

Hello,

I have tested this code on my own machine and it works fine, so not sure why it isn't satisfying the challenge.

I have found code in the community to pass the challenge but I'm keen to know why this fails?

Thanks in advance!

instances.py 
def combiner(list):
    total = 0
    output = ""
    for item in list:
        if isinstance(item, str):
            output += item
        elif isinstance(item, int):
            total += item
    output += str(total)
    return output

2 Answers

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

The input list of items can be thought of as "string" and "non-string". With this in mind, the elif isinstance(item, int): can be replaced with a simple else:.

Stuart Wright
Stuart Wright
41,120 Points
Stuart Wright
Stuart Wright
41,120 Points

I think it’s because you only check for int, not float, which is also a numeric type.

As an aside, you shouldn’t really name your variable ‘list’ since it’s a built-in type, although I’m not sure that would cause your code to fail the challenge.