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Python Introducing Lists Build an Application Multidimensional Musical Groups

Zachary Radcliff
Zachary Radcliff
3,986 Points

Can someone tell me why this is pulling a list bigger than 3?

Any help is much appreciated!

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 item in musical_groups:
    print(", ".join(item))
    if len(item) == 3:
        print(item)

1 Answer

Rohald van Merode
seal-mask
STAFF
.a{fill-rule:evenodd;}techdegree
Rohald van Merode
Treehouse Staff

Hey Zachary Radcliff 👋

You're currently printing the items twice, once before your conditional and again if the length of the list is indeed 3. You'll want to swap things around a little bit by moving the first print function call inside the conditional and deleting the other one. This way the names will still be joined together with a , but only be printed when the length is 3:

for item in musical_groups:
    if len(item) == 3:
        print(", ".join(item))

Hope this clears things up! 😄