Thanks for pointing out, I'll improve it

Description does not specify if }{>< can occur more than once, and if so how it should be handled.

This means that the expected value is not well defined for inputs such as ab}{><cd}{><ef or ab}{><cd<>{}ef.

Much better.

Fixed it!

Fixed it!

Before you publish your challenge: this solution passes all tests:

def decode_void_whispers(message):
    
    # Your implementation here
    pass

There, fixed!

Hey guys, I'm still finishing authoring this, sorry!

Codewars challenges do not use unittest, they use custom testing framework. You can see Python authoring guide and authoring examples for some ideas how to build tests in Python.

Instructions don't match the result:

# Example 1:
decode_void_whispers("Hello World")
# Returns: "sDOOL dLIOV"
# Explanation:
# - Remove every 3rd character: "HloWrd"
# - Invert ASCII values (158 - ord(c)): "sDOOL dLIOV"

However:

>>> ''.join(chr(158 - ord(c)) for c in 'Hello World')
'V922/~G/,2:'

What am I missing?

I can see how that result was actually derived but what's with the "158 - ord(c)" then?

Read up on how to structure your tests.

@test.describe('Basic Test Cases')
def test_cases():
    @test.it('Example Tests')
    def example_tests():
      #assertions here...
        
    @test.it('Fixed Tests')
    def fixed_tests():
      #more assertions...

Kata is unsolvable in its current state.

test_random_cases (__main__.RandomTests.test_random_cases) ... ok
test_basic_examples (__main__.TestVoidWhispers.test_basic_examples) ... ok
test_complex_cases (__main__.TestVoidWhispers.test_complex_cases) ... ok
test_empty_string (__main__.TestVoidWhispers.test_empty_string) ... ok
test_no_third_char (__main__.TestVoidWhispers.test_no_third_char) ... ok
test_reversal (__main__.TestVoidWhispers.test_reversal) ... ok
test_void_trap (__main__.TestVoidWhispers.test_void_trap) ... ok

----------------------------------------------------------------------
Ran 7 tests in 0.006s

OK