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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.
https://docs.python.org/3/reference/expressions.html#shifting-operations
-1 should equal 12933
I feel like this is a test to see if you're capable of dealing with dumb instructions.
Editing a text in the description could be done easily and without breaking anything tho.
Whilst a valid point, closing since not worth editing Kata with 60,000+ completions for a grammatical issue
There is a grammatical error in the description.
"Bob is preparing to pass IQ test."
should be
"Bob is preparing to pass an IQ test."
Grammatical issues aside, you don't "pass" or "fail" an IQ test.