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Python Introducing Lists Build an Application Multidimensional Musical Groups

My code for "introducing lists" isn't running.

The output is "expected str instance list found". can someone help? thanks.

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 musical_group in musical_groups:
    toline = ", ".join(musical_groups);

1 Answer

Chris Freeman
Chris Freeman
Treehouse Moderator 68,404 Points

Hey Brendan Dzeguze, are SO close!

You need to join the loop variable musical_group and not the whole data group musical_groups

Also, Python does not use the semi-colons to end a line. In this case, they are harmless, but best to remove them.

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