Year 2021: are there any updates here? :)

Hi, as the "chars" string is sorted, you don't have to use Contains which will scan the all string. You can compare to the last character of result to determine if addition of character is ok.
Look at my solution.

In solution set up , the function name "is_valid_ip" should be renamed to "Is_valid_ip"

There are no invalid numerals in all 2000+ tests, only in sample tests.

Yes, release with streams is even ready for build numbers! Good catch.

Change Python version using the select.

I am still getting same error in version 2.7, what is solution?

2.7 should be disabled now

choices is a Python 3.6 thing so 2.7 shouldn't even be available.

Hi, in python version 2.7, there's a bug in the test (attempt) :
Traceback (most recent call last):
File "main.py", line 44, in
do_test()
File "main.py", line 17, in do_test
from random import randint, choices
ImportError: cannot import name choices

Hi,
Your solution is incorrect if D is between mouse and cat rather than cat and mouse. The order of position of cat and mouse should not change the result !!
Bye.

First of all, you already saw that "each" is exactly the same as forEach for an array object. So what could be "each" ?
Second, "having" and "being_the" are not related to any "Thing" object, right ? But these and their properties are going to be evaluated before the call to "each". What could they be ?
For the function "speak", I'm still trying to figure it out !

IMHO the best place to find some power users is the Gitter channel.

The solutions are correct because the description states "You don't need to validate the form of the Roman numeral."

However with this, the problem definitely doesn't feel like a level 4 kata

Very smart!