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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.
Your code is wrong because you rely on approximate values to give exact answers. If your code does produce different results elsewhere then you might be on a different architechture (ARM?) and it would still be wrong even if it should happen to incidentally give correct answers, if that's even the case.
That's about the non-zero elements, and you can see that in the sample test.
Many katas are this way, they only require pretty much some further mathematical research.
That broke all solutions...
This might be worth raising as an issue with the Python version, since other languages don't seem to have the requirement at all.
this would be a good time to re-read the instructions to see what you're allowed to do with the parts to obtain the word