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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.
My solution is failing after submit with the following message:
['b'] should equal []
The code in my local interpreter is returning [] for an input of ['b'].
When running tests on codewars the following passes:
test.assert_equals(filter_list(['b']),[])
Does anyone know what is going on here?