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Python Introducing Lists Build an Application Multidimensional Musical Groups

Jennifer Sherwood
Jennifer Sherwood
896 Points
Posted by Jennifer Sherwood
Jennifer Sherwood
896 Points

Musical Groups - TabError

I can't figure this out. I indented after the For statement and again in the If statement but I'm getting a TabError.

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:
        print(", ".join(group))

2 Answers

diogorferreira
diogorferreira
19,363 Points
diogorferreira
diogorferreira
19,363 Points

To me it gives an Assertion Error not a Tab Error.

  • But this is because with if group == 3 you are comparing group which would equal to something like this: ["Ad Rock", "MCA", "Mike D."] or ["Salt", "Peppa", "Spinderella"] to 3 which would never return True

  • You'd need to use the len() function to figure out how many are in that group and then compare them together like so:

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

    Hope that helps!