Joining two lists

Question

I think I am stuck at the bottom, trying to concatenate and print out the joined lists.

instances.py

words = []
numbers = []

def combiner(*args):
    for arg in args:
        if isinstance(arg, str):
            words.append(arg)
        if isinstance(arg, float):
            numbers.append(arg)
    full_list = words + numbers.sum()
    print(full_list.join())

Answer 1 · 2020-01-10T01:05:35Z

January 10, 2020 1:05am

You are on the right path. There are a few items to fix up.

remove the * from the args parameter. The function input will be a single list. By using the *, the function packets the entire list into the first element of the tuple *args: (["apple", 5, "dog", 8.2], ). This means the for loop will be seen a list instance. It might be better to change the param name to items and use for item in items
the empty list initialization should be inside the function definition
remember to check for integers too: isinstance(arg, int)
the list numbers does not have a sum method. Use sum(numbers) instead
to join the words list into a single string, use "".join(words)
be sure to add a string version of the sum to the end of the word string
return the final value. Using print is not seen by the challenge checker

Post back if you have more questions. Good Luck!!

Welcome to the Treehouse Community

Looking to learn something new?

Abby Schoeller

Abby Schoeller

Joining two lists

1 Answer

Chris Freeman

Chris Freeman