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sarabahrini
5,493 PointsJoining 2 dimensional lists - Python
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?
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"], ]
What is wrong with my answer below and how to fix it(?):
for group in musical_groups: ", ".join(group)
print(", ". join(musical_groups))
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 group in musical_groups:
", ".join(group)
print(", ". join(musical_groups))
2 Answers
![Chris Freeman](https://uploads.teamtreehouse.com/production/profile-photos/1153532/micro_image.jpg)
Chris Freeman
Treehouse Moderator 68,425 PointsYou are close on the first task. Print the result of the join()
inside the for
loop.
Post back if you need more help. Good luck!!
![cesarmatta](https://uploads.teamtreehouse.com/production/profile-photos/4755812/micro_0.jpg)
cesarmatta
11,592 PointsWhy is it usefull to repeat the", ".join(group) ? I think you can just do like that:
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 group in musical_groups:
print(", ". join(group))
sarabahrini
5,493 Pointssarabahrini
5,493 PointsIt worked!! Thank you :)