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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.
Ah, that makes much more sense. Apologies for my ignorance.
Not sure if the tests have been changed at some point, but how can the following test work properly?
Test.assert_equals(gap(6,100,110), None)
101 and 107 are prime numbers between 100 and 110 with a gap of 6.
Python version has several fatal errors in test cases preventing correct code from working. Skip this.