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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.
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range(1,7)
the last number (stop=7) is not included in the range function so when you write 7 the iteration of the for loop will stop in the number 6 (since the 7 is not included)
so when you want to stop in 7 you should do 7+1
the if statement works only if condition is true, so if b was a true it will run and return a True and else otherwise,
and if you're talking about the way he write the code this the shorthand if statement in return statement
god damn, man give me your brain