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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By using
line[:]you're making a copy of the list. If you instead just useline, you're adding the same line to the board multiple times. In that case, when you change one element toO, it changes that element in every row of the board.You can see more here: https://docs.python.org/3/faq/programming.html#how-do-i-copy-an-object-in-python
This comment is hidden because it contains spoiler information about the solution
This comment is hidden because it contains spoiler information about the solution
This comment is hidden because it contains spoiler information about the solution