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Python Introducing Lists Build an Application Multidimensional Musical Groups

nick schubert
nick schubert
3,535 Points

I don't know what I'm doing wrong here.

In this challenge I have to show Trio's only.

When I run this code in workspaces it works just fine, but when I press "Check Work" I receive an AssertionError saying that it's detecting non-trio's. I have been trying to debug this for quite a while now and I can't figure out what I'm doing wrong, so, all help is appreciated!

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 member in musical_groups:
    members = ", ".join(member)
    if len(member) == 3:
        trio = ", ".join(member)

1 Answer

Steven Parker
Steven Parker
229,967 Points

You'll want to "print" only after making the length test. As it is, every group is printed at least once, and trios are printed twice.

Also, you don't need to create that separate "members" variable, since you'll only be printing "trio".

nick schubert
nick schubert
3,535 Points

Ah I got it, I passed the challenge when I removed the print(members) line.

Thanks for the quick reply! I appreciate it. :3