Looks clever but in terms of cost:

• you have to scan the string many, many times

• each time you do parens.replace you are generating a new string.

you're overthinking this: this approach is actually very bad (think about its time complexity)

Awesome!

Great code!

I didn't know that a empty string denied is true \õ/

Thats usefull, make a lot of things easier

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I had exactly the same idea, but done that a bit harder, thank you! ^_^

Clever one =)

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yeah, I know. Unfortunately, there's nothing that can be done about that... :/

"Network Error

This error was caused due to an issue processing the web request, not because of an issue executing your code."

the fact it said it was not an issue executing my code was quite misleading.

Not an issue.

Actually what you're facing is that you print way too much things to the console and that is what makes fail your code (for now, at least). This kata is demanding about performances and present some difficulties in that it's sometime difficult to see what is causing failure because the debugging print statments can make fail yor code by themselves.

Some inputs contain several millions of characters.

it seems to be an issue with "import re"

every time i try to submit by solution it gives me an network error.

(code in comments)

Because they're frozen.

It's a 3kyu, so it's not going to be this simple ;-)