I see. Thank you for clarifying. I've never used Python 2, so I wouldn't know. Haha!

This solution is for Python 2, and that's been already mentioned 7 years ago by runzhi214 and frankturnerv.

In other programming languages, like JavaScript, it returns a returns a new array from an original array based instructions you give it. It works similarly in Python, only the list isn't return. It iterates through a list and applies changes you've specified using a function to each element in the list, or multiple lists. I hope this helps some.

here are few examples to simplify it:
map(int, a) --> apply int to every list object in list a to make them integers
map(str, a) --> apply str to every list object in list a to make them strings

This is a clever use of exceptions, though I would avoid this in production code. Raising exceptions is costly, and also if "a" happens to be a long string you would be creating a string 50 times larger.

good use!

I wrote exactly this and it failed lmfao, what??

python new test framework is required. updated in this fork

Thuis a brilliant codewar

Thanks!

starting to using less and less wording... nice ;)