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Python Python Collections (2016, retired 2019) Lists Creating lists

Arthur Walton
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Arthur Walton
Python Web Development Techdegree Student 3,906 Points
Posted by Arthur Walton
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Arthur Walton
Python Web Development Techdegree Student 3,906 Points

Challenge doesn't make sense

stuck on this challenge? i don't know if it's how the challenge is worded or if just lost. can anyone please help. thank you.

lists.py 
my_list = ["I'm pretty tired.",
           "This i getting frusterating",
           5,3,2


]
new_list = [1, 5]

my_list.extend(new_list)

1 Answer

Louise St. Germain
Louise St. Germain
19,424 Points
Louise St. Germain
Louise St. Germain
19,424 Points

Hi Arthur,

You're so close! The only thing is that when you use "extend", it merges the list items into the existing list and doesn't retain them as a separate list. So right now, your code will output:

my_list = ["I'm pretty tired.",
           "This i getting frusterating",
           5,3,2, 1, 5]
# Notice that the last 1, 5 are no longer in their own mini list; 
# Python just merged them into one big list.

... where your last 2 items just continue the first list, and are not their own list. The challenge wants this:

my_list = ["I'm pretty tired.",
           "This i getting frusterating",
           5,3,2, [1, 5]]
# Where [1, 5] is a list within a list.

If you use "append" instead of "extend" when you tack [1,5] onto your existing list, everything should work!

Also, you could literally just hard-code the list: if you just put the line I have above, with the list-within-a-list already hard-coded into it, that should also work. The challenge isn't necessarily asking you to go through the trouble of appending a final list. It just wants it to be there, in any way you see fit.

Hope this helps!