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Python Introducing Lists Build an Application Multidimensional Musical Groups

Posted by Carson Bartlett
Carson Bartlett
3,574 Points

I don't understand the prompt, does it want us to print every member (not the group name) all separated by a comma?

I don't think the episode did enough to explain multidimensional lists and how to loop through them. Normally I would use a nested for loop, but is there a simpler way of doing this with the .join method?

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
for x in musical_group
    members = ", ".join(musical_groups)
    print(members)

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,425 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,425 Points

For task 1 you have three errors:

  • variable name Iā€™d musical_groups
  • missing colon (:) in if statement
  • join argument should be x

Post back if you need more help. Good luck!!!