My issue was that there can be comments. This doesn't appear in the problem statement, but caused my program to not find the next instruction and infinite loop

Hmm... That's interesting. I don't exactly know where a large performance bottleneck is, but I'm getting the 6000ms killed error.

Are the test cases meant to test performance? I'm getting a timeout on the Python version of the Kata.

Fixed.

Your python test bench cases that check for an error are missing a string error message argument. This causes the test bench code to instantly fail when you try to test your code.

The given test case is broken because it compares the function g.next to the tuple (3,0) instead of the result of the function g.next().

Fixed, thanks :)

Oh oops. Yeah I can fix that

You say positive integer value pairs. 0 is not a positive integer...

You should add multi-character comment markers.

You should make the test cases not run in time if the O(n) solution is not used.

You should specify in the description that the report should be mutable with the calls to the function. I assumed that the report had to be a static copy of the conditions and the report() method returns a new copy. Your test cases, however, indicate the less intuitive and more error-prone idea that report always returns the same object that changes with the new information from the function calls