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Python Introducing Lists Build an Application Multidimensional Musical Groups

Posted by merrill sequeira
merrill sequeira
2,874 Points

don't understand the question. can some one help?

shouldn't the code

for group in musical_groups: print(group)

be enough ? - dont understand the question

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"],
]

all_mems=[]

for group in musical_groups:
  all_mems.append(group)

print (str(all_mems))

2 Answers

Jimmy Sweeney
Jimmy Sweeney
5,649 Points
Jimmy Sweeney
Jimmy Sweeney
5,649 Points

Is this for part 1 of the challenge? The challenge is asking you to print out a set of strings. Each string should be the members of a musical group separated by commas.

Right now your code simply prints out the original list as a string. So the following would do the exact same thing as your code.

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"],
]

print(str(musical_groups))

Notice that original list is a list of lists. So each iteration in the for-loop will give you a list. For instance, the first iteration through musical_groups is ["Ad Rock, "MCA", "Miked D."]. You will want to use the join() method in order to join the strings within that first iteration into a new string. And then do that for each iteration.

Hope that helps!

merrill sequeira
merrill sequeira
2,874 Points

ok, so like ---

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

??

Jimmy Sweeney
Jimmy Sweeney
5,649 Points
Jimmy Sweeney
Jimmy Sweeney
5,649 Points

That should do it. But you may want to add spaces after the commas. :)

merrill sequeira
merrill sequeira
2,874 Points

thanks