Loading collection data...
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.
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i ran into index errors because some of the test cases involve empty strings; this may be the case here.
Please read this: https://docs.codewars.com/training/troubleshooting#post-discourse
Delete this line:
duplicate_count(text = input())