I think this is the first time I saw a kata that is well explained. Good for beginners that wants to transition to 6 kyu

GNAAAAAAAApproved

I find it strange that "null" is to be assigned to the number of items appearing 0 times in the list. Everything that is not in the list does that, and that is a lot. ;-)

Given a string (str) ...

Crystal:

Error: no overload matches 'max_consec_zeros' with type Int32

Overloads are:
 - max_consec_zeros(str : String)

Approved

python new test framework is required. updated in this fork

Approved

python new test framework is required. updated in this fork

OP solved it, closing

Approved

python new test framework is required. updated in this fork

Description should be language-agnostic