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 Introducing Lists Build an Application Multidimensional Musical Groups

Posted by Jessica Pratap
Jessica Pratap
1,501 Points

Confused on Task 2 of groups.py!

I'm not sure what I'm doing wrong...

groups.py 
musical_groups = [
    ["Ad Rock", "MCA", "Mike D."],
    ["John Lennon", "Paul McCartney", "Ringo Starr", "George Harrison"],
    ["Salt", "Peppa", "Spinderella"],
    ["Rivers Cuomo", "Patrick Wilson", "Brian Bell", "Scott Shriner"],
    ["Chuck D.", "Flavor Flav", "Professor Griff", "Khari Winn", "DJ Lord"],
    ["Axl Rose", "Slash", "Duff McKagan", "Steven Adler"],
    ["Run", "DMC", "Jam Master Jay"],
]
for musical_group in musical_groups:
    print(", ".join(musical_group))

for group in musical_group:
    if len(group) == 3:
      print(", ".join(group))

1 Answer

Logan R
Logan R
22,989 Points
Logan R
Logan R
22,989 Points

Hey Jessica,

Your answer is extremely close! Your primary issue is that you are missing the s on musical_group on the second for loop. It should be musical_groups.

Also, the second task in the challenge only wants the trios, so you will want to comment out the first for loop and print.

Thanks! Hope it helps, if not let me know.

Jessica Pratap
Jessica Pratap
1,501 Points

Hey Logan, Thanks so much for answering! What do you mean when you say for the 2nd challenge that you need to comment out the first loop and print? thanks

Jessica Pratap
Jessica Pratap
1,501 Points

Actually ,I figured it out ,thank you for your help!