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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 was an issue with random tests generating floats, it should be fixed now, try again.
I was talking about Python there, in Ruby simply write
regex=/your regular expression here/so, from your code, remove the quotes.You're supposed to write a regular expression. Not an issue.