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Python

David Pollard
David Pollard
4,324 Points
Posted by David Pollard
David Pollard
4,324 Points

Code works in Python, but doesn't seem to satisfy the answer required ?

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(*listofthings):
    num = 0.0
    string = ""
    for thing in listofthings:
        if isinstance(thing, str):
            # concat string
            string = string + thing
        elif isinstance(thing, (int,float)):
            # add numbers
            num = num + thing

    return (string, num)

3 Answers

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

The argument given will already be a list, so you don't need to "splat" operator (*).

Then, this code is returning a tuple containing a string and a number., but the challenge expects a single string. Convert the number to a string and concatenate it with the other string.

I'll bet you can do it now without a code spoiler. :wink:

jhon white
jhon white
20,006 Points
jhon white
jhon white
20,006 Points 
def combiner(listofthings):
    num = 0.0
    string = ""
    for thing in listofthings:
        if isinstance(thing, str):
            # concat string
            string = string + thing
        elif isinstance(thing, (int,float)):
            # add numbers
            num = num + thing

    return string + str(num)

the input should be a list, and the return should be combin the strings and numbers.

Good luck :)

David Pollard
David Pollard
4,324 Points
David Pollard
David Pollard
4,324 Points

Thanks chaps. "Return a single string" - should have read the question better !!! :-)

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

David Pollard — Glad to help. You can mark the question solved by choosing a "best answer".
And happy coding!