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Python Introducing Lists Build an Application Multidimensional Musical Groups

Posted by vand123
vand123
5,210 Points

Using the wrong operator?

Am I suppose to be using an operator to return the lists with 3 elements? If not, I guess I could use index to specifically return the lists with three members.

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"],
]
for musical_group in musical_groups:
    members = ", ".join(musical_group)
    if len(members) < 4:
        print(members)

2 Answers

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

Since "members" is the joined string, it's length is the number of characters which is always 4 or more.

To check the number of elements in the list, you need to check the length of "musical_group" instead.

vand123
vand123
5,210 Points
vand123
vand123
5,210 Points

Ah so simple! Thank you the help - got it now.

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

vand123 — Glad to help. You can mark a question solved by choosing a "best answer".
And happy coding!