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Python Introducing Lists Build an Application Multidimensional Musical Groups

Posted by Benjamin Dannhoff
Benjamin Dannhoff
513 Points

Im not sure

The output looks right. The errors im getting are very confusing and ive no idea how to fix them. One error is to not modify the list, and the other is an assertion error

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"],
]


for musical_groups in musical_groups:
    join = ", ".join(musical_groups)
    print("Group members: " + join)

2 Answers

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,967 Points
KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,967 Points

You are iterating with the same variable name as your list.

for musical_groups in musical_groups

Try just musical_group

Benjamin Dannhoff
Benjamin Dannhoff
513 Points

I have tried that, the error changes to the output being a list and not a string.

ursaminor
ursaminor
11,271 Points
ursaminor
ursaminor
11,271 Points

You have to also change musical_groups to musical_group in the second line. That will join each item in the list into one string. Also, you may need to take out "Group members: ". The challenge doesn't say to do that so it may fail. You can combine the two lines into one: 

for musical_group in musical_groups:
    print(", ".join(musical_group))