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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.
You are right. Thank you!
Most likely you're trying to iterate over an integer, like so:
`for x, y in sequence:
do stuff`
To fix that, you'd write
`for x, y in enumerate(sequence):
do stuff`
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floor division is easier to see, however. best not to depend on quirks of the language. this also preserves forwards compatibility with python3
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