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 Timothy Rhoads
Timothy Rhoads
1,088 Points

Where is the name of the group in this multi-dimensional list?

I am confused about where the group name is.

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"],
]
# Your code here

1 Answer

Tim Danner
Tim Danner
3,284 Points
Tim Danner
Tim Danner
3,284 Points

The challenge is telling you to join every list in musical_groups into a string and display them.

To do this, you'll have to define a for loop, and join the list inside the loop:

for group in musical_groups:
    # note that join is a string method
    # the separator goes into the string and the list goes into the parentheses
    print(', '.join(group))