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Python Introducing Lists Build an Application Multidimensional Musical Groups

Posted by vincent juma
vincent juma
1,159 Points

Hello everyone, I'd really appreciate some help on grouping the below items in trios in my code

Awesome! Now I'd like to see only groups that are trios, you know 3 members.

So can you please only print out the trios? It should still use the joined string format from task 1

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"],
]

new_list = []
for item in musical_groups:

    new_list += item
    final_string = ", ".join(new_list)        
    print(final_string)

1 Answer

Daniel Turato
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PLUS
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Daniel Turato
Java Web Development Techdegree Graduate 30,124 Points
Daniel Turato
.a{fill-rule:evenodd;}techdegree seal-36
Daniel Turato
Java Web Development Techdegree Graduate 30,124 Points

As you are already looping through each group, its as simple as checking the length of each group to see how many members are in each of them. So your code would look like this:

for group in musical_groups:
    if len(group) == 3:
        print(", ".join(group))
vincent juma
vincent juma
1,159 Points

Thanks so much