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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.
There's a more concise way to do it with formatted string literals https://www.codewars.com/kata/reviews/59b1a938182024506b00081d/groups/5d211384ed0ee5000134b2e3
basically my sol but more bigbrain
This is similar to mine ;)
Cheater. lol jk
That is an old style of string formatting. See also: https://pyformat.info
Can someone explain these % signs in return
map function takes two arguments: function and Iterable (list, tuple, generator, ...) and apply on each item in iterable the function.
map(str, n) == (str(i) for i in n)
What is the map for? Sorry if this is a dumb question.