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Python Introducing Lists Build an Application Multidimensional Musical Groups

Reinhard Kiprop
Reinhard Kiprop
3,116 Points
Posted by Reinhard Kiprop
Reinhard Kiprop
3,116 Points

looping and joining strings

Here is a multi-dimensional list of musical groups. The first dimension is group, the second is group members.

Can you loop through each group and output the members joined together with a ", " comma space as a separator, please?

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_groups:
    ", ".join(musical_groups)

1 Answer

Janko Bauer
Janko Bauer
13,358 Points
Janko Bauer
Janko Bauer
13,358 Points

Hi,

Your answer is almost right, just one tweek.
You have a list in a list. So, the first for loop returns the list of members. The 'reference' will then be 'x'. then you call the join on the 'x' since that is the actual list to join. In other words: ", ".join(x)

let me know if you need more help