The tests are passing the 'base'-list as a reference to your function, which means that the 'base'-list will be modified if your function doesn't copy it before usage.

Read the error message, it tells you with which input your code fails:

Traceback (most recent call last):
  File "/workspace/default/src/codewars-test/codewars_test/test_framework.py", line 111, in wrapper
    func()
  File "tests.py", line 8, in __
    test.assert_equals(title_case(''), '')
  File "/workspace/default/solution.py", line 4, in title_case
    ...
IndexError: list index out of range

Not a kata issue.

btw, I get an index error when I attempt it

Here's an example of a test:

test.assert_equals(bool(search(regex, 'fjd3IR9')), True)

Your code should contain only one line: assignment to regex variable.

I am having the same problem as jgarwin95. My code does what it says in the description. After defining a = [1, 2, 3, 4], calling a[0] returns 1 and calling it again returns 2 (since a[0] is deleted after the first calling). However, I get an error saying '1 should equal 2' for the first case, and '2 should equal 4' in the second case. Any ideas on why this might be the case? If you need to see my code, let me know and I can copy and paste it.

And just to see what happens, I redefined my code so that when a[index] is called, it returns (and pops) a[index+1], i.e the output would be 2 in the first case. However, now the test case gave an error saying '2 should equal 1' !!!!

oh yeah, lol thanks

How can I see the input parameters of Test 0? That's the only test my code doesn't work for. The 'Sample tests' box in the bottom right only show the parameters for Test 1 & 2.

I don't think it's possible :/ Because it's marked as spoiler, only those who solved it will be able to see it, so it's not a big deal. But discourse section is more for discussing issues or problems with code, description, etc. Just so you know for future :P

I'm sorry, i didn't know, how can i remove it?

Don't post your solutions in discourse! It's forbidden. Use the solutions tab.