Simple Regular Expression Kata

If someone is as confused as I am and thinks that there is an issue in the kata's JavaScript tests, trust me: there are NO issues.

this is not what is happening. your code returns true for an empty string, while the expected value is false. Your print the input string, but since it's empty and you did not add delimiters, you cannot see it and you think the input was the previous one.

the tests cannot find your function if you change its name; don't do that

duplicate of this issue

fixed

closing as not a proper issue report

• traditional way speed: 1
• regular expression speed: 10x
• take a look to boost your speed: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_expressions

That's not a 5kyu task, bruh

description: don't mention null. strings are not null. null is when you DON'T have a string. which we do. that's already specified.

Requiring a regex and moving to 6 kyu would be more appropriate for Python.

Python: missing

from solution import alphanumeric
import codewars_test as test

in the sample tests and full tests

there is actually an issue here. since Codewars moved away from concatenating the user's solution and the tests for Python, whatever renaming and imports the user makes should stay contained within the solution module. however, because the Python tests suite does not explicitely import the user's function in this kata, Codewars inserts from solution import * to the tests for backwards-compatibility. alphanumeric should be imported explicitely instead; raising an issue about that

the reason your code fails is because you overwrite str in your import line

this means str is no longer what it should be in the Python code,
and so that breaks the tester

this is why you should never overwrite a built-in function, a module name, or a keyword, et cetera

first, you should use a spoiler flag if you post code

I added the flag to your comment