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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.
I dont know what the...
print(increment_string("foobar099"))
...is doing here.
I think that I got lucky with the tests.
Anyway, it took me a while to find this solution and it is not even a good one.
Someone can explain it to me?
Edit: I got it, it is clever. I didn't know it was even possible to do a functionception...
I didn't understand why the "0" was added only at the end, but now I understand a bit better how Python works.
I don't really know how it worked but it did..
The solution was stupid and inefficient.