solution in 1 string :0

I appreciate your response a lot! Thanks!

• forbidding things is very hard in Python; the language is very dynamic and there are many, many ways to bypass naive restrictions
• this kata is old (more than 11 years old...) and overranked. there has been a rank deflation on Codewars over time, and unfortunately ranks cannot be changed
• in any case, this is not a proper kata issue

It's more like a 7 kyu.

Much too easy for 5 kyu!

Why should they be false?

State the language you used. Javascript contains a test with underscore.

Way to easy for Javascript, if regex is allowed its way to easy.

bruh that was a good one for a 5kyu, it tooks me half an hour to resolve it -_-

Not sure where you're referring to, but...

("hello world_", False)

OP left the building...

Too eazy for 5kyu

pls review the Rust version