Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

Python Python Collections (2016, retired 2019) Tuples Combo

Kevin Myers
Kevin Myers
7,604 Points

Why does this return a TyperError: 'int'? It works on workspaces but on the challenge I get an error

def combo(args, args_2): my_list = [] a = 0 for arg in args:

    for blarg in args_2[a]:
        my_tuple = (arg, blarg)
        my_list.append(my_tuple)
        a += 1
return(my_list)
combo.py
# combo([1, 2, 3], 'abc')
# Output:
# [(1, 'a'), (2, 'b'), (3, 'c')]

def combo(args, args_2):
    my_list = []
    a = 0
    for arg in args:

        for blarg in args_2[a]:
            my_tuple = (arg, blarg)
            my_list.append(my_tuple)
            a += 1
    return(my_list)   

1 Answer

Steven Parker
Steven Parker
220,415 Points

I'm sure the challenge tests your code more thoroughly than just running the example through it. And it should not matter what kind of iterables the objects are, or in which order they are given.

Try testing your code using this to see the issue:

combo('abc', [1, 2, 3])

Hint: you probably don't need 2 loops.