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

Brent Capuano
Brent Capuano
949 Points
Posted by Brent Capuano
Brent Capuano
949 Points

Help! Getting a "none" value in my list while trying to incorporate strings

Plase help. When I added strings into my list, it generated "none" items and the number of items is wrong now.

here is my code

other_list = [ ["6"], ["0"], ] my_list = [ [4], [1], [7], [print("HOY HOY HOY")], [print("JJ")], [print(other_list)], ]

lists.py 
other_list = [
    ["6"],
    ["0"],
]
my_list = [
    [4],
    [1],
    [7],
    [print("HOY HOY HOY")],
    [print("JJ")],
    [print(other_list)],
]
Dave StSomeWhere
Dave StSomeWhere
19,870 Points
Dave StSomeWhere
Dave StSomeWhere
19,870 Points 
[print("HOY HOY HOY")],
[print("JJ")],
[print(other_list)],

Are not valid list elements, so you get [None].

1 Answer

nia
nia
9,150 Points
nia
nia
9,150 Points

Hello, Brent!

Dave's completely right, the print statements are not valid because they aren't actually elements. Think of the things in a list as a shopping basket. You can only put in actual things like strings and numbers, not actions like print.

As for the rest of the challenge, the first 3 items should just be numbers like 3, 4, 5, not in brackets. The next 2 items in the list should be strings, i.e. anything encased in just quotation marks, like "Hello world" or "8." The last item should be a list containing 2 items. So this should be two items that are numbers or strings, encased in a single pair of brackets. To summarize:

-the first 3 items should be simply numbers, no brackets or quotation marks -the next 2 items should be strings, i.e. anything encased in quotation marks -the next item should be a list containing 2 items, like [2019, "new year!"] -all of this should be contained in a single pair of brackets, assigned to the list my_list

I hope this helps!