Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Python Python Collections (2016, retired 2019) Tuples Combo

Bruno Paris
Bruno Paris
3,568 Points
Posted by Bruno Paris
Bruno Paris
3,568 Points

what am i doing wrong? the program runs in the workspace but it won´t run in the challenge. "couldn´t find combo"

the program runs in the workspace but it won´t run in the challenge. bummer: Couldn´t find 'combo'

combo.py 
# combo([1, 2, 3], 'abc')
# Output:
# [(1, 'a'), (2, 'b'), (3, 'c')]

def combo (first, second):

    i=0
    for x in first:        
        a= x, second[i]
        i=i+1
        lists.append(a)

    return lists

1 Answer

Steven Parker
Steven Parker
229,644 Points
Steven Parker
Steven Parker
229,644 Points

Odd that you didn't get an error in the workspace. I would have expected it to complain that "lists" wasn't defined before calling "append" on it. But if you initialize "lists", it should pass the challenge.

If not, check for possible mixing tabs and spaces in the indentation. That wouldn't show up here, but could also cause an issue.

Bruno Paris
Bruno Paris
3,568 Points
Bruno Paris
Bruno Paris
3,568 Points

it was that! thank you!