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Python Introducing Lists Build an Application Multidimensional Musical Groups

Posted by seanwoleslagle
seanwoleslagle
2,839 Points

Need help with 2nd part of groups.py

I got the first part of my code right. I can't figure out where I'm messing up for the second part of the challenge, and why I'm messing it up.

This is what I got right for the first part:

'''for group in musical_groups: group_members = ", ".join(group) print(group_members)'''

However, if you see my code, you'll see how I'm messing up somewhere. I really appreciate any help on this matter!

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 group in musical_groups:
    if group = 3:
        group_members = ", ".join(group)
        print(group_members)

1 Answer

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

Since the group is a list, it would never equal a number. But you could compare the length of a list to a number.

Also be careful about operator symbols. A single equal sign ("=") is an assignment operator. A comparison operator is a double equal sign ("==").

seanwoleslagle
seanwoleslagle
2,839 Points

Lol, I just posted about this too. Still figuring the '=' vs '==' thing out I suppose. That was a silly mistake on my part. I ended up figuring it out. Thanks for your help!

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

When posting code, those three marks are accents (not apostrophes). Also, posting the final solution to a challenge is generally discouraged by Treehouse.

seanwoleslagle
seanwoleslagle
2,839 Points

Sorry about that. I'm still a newbie to how things work. I will keep that in mind for the future. I deleted my code from my previous post so it isn't out there for somebody to copy and paste. I appreciate the help.