Could you please write again your explanation?

Original test was on this data: "Sadus:cpms>orqn3zecwGvnznSgacs","MynwdKizfd$lvse+gnbaGydxyXzayp"
You should not count upper case letters.

unlimited-nested-lists version of this kata solution

From kata description:
"when its argument is an array that has the same nesting structures and same corresponding length of nested arrays as the first array"

So we have only arrays/nested arays. But in python tests I see int:
same_structure_as([],1)

I think this test should be removed because it doesn't match task conditions.

Unfortunately, there are still not only lists. I found this test case:
same_structure_as([],1)

But in task description I see only arrays/nested arrays. 1 - is not an array.