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.
Not a kata issue. Your solution is incorrect.
try to debug it using
print
, and see what happened to the list when you iterate and remove something from it.Use code formatting when posting blocks of code.