Okay, I fixed the problem in the description, but it shouldn't change your solution

I have now specified that the ID's have only the digits 0-9

A URL is valid if all of the following are true

1.The scheme (every charecter before the first "/") has to equal "https:"

2.The Id (every charecter after the last "/") has to have a length of five or four

If the Id is four charecters long at this point you would add a "0" to the begining

3.The modified Id does not start with "00"

The scheme is invalid if statement 1. is not true. The ID is invalid if either statement 2. or 3. are false.

Okay I have changed the hs/UL.com/4 examples to hs:/UL.com/4. And changed the use of protocol to scheme

For this kata 12%32 has five, but all the IDs should only have the numerical digits 0-9 in them

I am sorry for any confusion I have caused. If you are talking about outputs when either the ID or protocol is invalid protocol_string = "{whatever the protocol is} is an invalid protocol." Id_string = "{Id} is an invalid store ID.".The returned string should have the protocol_string if the protocol is invalid and the Id isn't. If the ID is invalid but the protocol isn't you should return Id_string. When both are invalid return protocol_string+Id_string. If this is not what you're talking about, I do not quite understand what you are saying.

I fixed the first two, but do not understand the third, Sorry.

How do you know if an Ace is 1 or 11. You didn't tell us which situation causes 1 and which situation causes 11.

This is 0.4ms shorter on average.

The test cases have an "NameError: name 'Test' is not defined" just turn the Test to test

Totally correct.

Sorry, fixed it.