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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
you have to check first if array1 or array2 is falsy like None or an empty array.
It is at the end of the instruction
The third one expects false, the next one expects true. Not a kata issue.
This comment is hidden because it contains spoiler information about the solution
Oh, I get it, thank you very much.
A problem with your code is not a kata issue. Read this: https://docs.codewars.com/training/troubleshooting post your current code.
For some reason I'm getting TypeError: 'NoneType' object is not iterable. I tried to fix it with some ifs like "if array2 is not None:", but it didn't work. Could some one help pls?
Thanks.