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Python

Posted by newpal
newpal
1,717 Points

What is wrong with my code please?

Create a function named combiner that takes a single argument, which will be a list made up of strings and numbers.

Return a single string that is a combination of all of the strings in the list and then the sum of all of the numbers. For example, with the input ["apple", 5.2, "dog", 8], combiner would return "appledog13.2". Be sure to use isinstance to solve this as I might try to trick you.

instances.py 
def combiner([string, num]):
    strings = ''
    total = 0
    for i in [string, num]:
        if isinstance(i, str):
            strings += i
        elif isinstance(i, (int, float)):
            total += i
    return strings + total

1 Answer

Steven Parker
Steven Parker
229,732 Points
Steven Parker
Steven Parker
229,732 Points

When the instructions say the "single argument, which will be a list made up of strings and numbers", you just need one parameter name to reference that list. Besides, even if that was valid syntax you couldn't be sure the list would always contain only two entries.

You might also need to do some conversion when combining string and number results.

newpal
newpal
1,717 Points

Thank you Steven! Your explanation is very helpful!