Loading collection data...
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.
I'm pretty sure this one-liner will get you failed in a google interview. More than one "for" clauses in a list comprehension is not permitted per Google style guide 2.7.4. When things get complicated they'd rather see for loops, even though list comprehension has an internal overhead optimization (about 2x faster).