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Python Introducing Lists Build an Application Multidimensional Musical Groups

multidimentional musical groups

missing out what text to put in, question is too broad, need better hints

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
musical_groups.join("A"  + ", ")
for musical_groups in "A"  + ", ". join

2 Answers

Alex Koumparos
Alex Koumparos
Python Development Techdegree Student 36,887 Points

Hi fl6,

Let's take a look at the instructions and pick out the specific hints for how to approach the problem.

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?

The first couple of sentences just defines some terms for us: group and members. We'll use those definitions in the second half of the question.

The question then says, "loop through each group". That's a hint that you'll want to use a loop. Since we have a collection that we're going to iterate through, we'll want to use a for loop.

It then says "output the members". That's a bit ambiguous, but since we're just using a loop construct and not being asked to define a function, we're probably not being asked to return anything, so let's assume that we're just going to print something on each loop iteration.

It then says we want the output "joined together with a , comma space as a separator". That's a hint that we'll want to use the join method for joining together array elements to create a string. Remember that you are calling the join method on the text you want to use to join the elements together with, and the argument passed to join is the collection you are joining.

For example, to join ['a', 'b', 'c'] with semicolons you would do the following:


Hopefully that points you in the right direction.



Wow!! It looked so difficult but it was easy thanks Alex Koumparos!!