This particular random test seems to not want the sin(-5 * x) == part of the expression:

'sin(-5 * x)  ==  - 5 cos(x)^4 sin(x) + 10 cos(x)^2 sin(x)^3 - sin(x)^5' should equal '- 5 cos(x)^4 sin(x) + 10 cos(x)^2 sin(x)^3 - sin(x)^5'

It's not consistent because other random tests do require that prefix.

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?

' O| /Bn' should equal ' O-\n| /Bn'

There is no vowel after the 'O'. Why does it need to be broken up?

Error when submitting:

File "/workspace/default/tests.py", line 8
    def test.(vignere_cipher()):
            ^
SyntaxError: expected '('

src/test/java/CraftingCheckerTest.java:9: error: cannot find symbol
    private static final String STONE = CraftingChecker.STONE;
                                                       ^
  symbol:   variable STONE
  location: class CraftingChecker
src/test/java/CraftingCheckerTest.java:10: error: cannot find symbol
    private static final String STICK = CraftingChecker.STICK;
                                                       ^
  symbol:   variable STICK
  location: class CraftingChecker
2 errors

I think it would make more sense for the tests to stand alone and not depend on static constants in the solution.

Error when submitting solution:

Traceback (most recent call last):
  File "/workspace/default/tests.py", line 4, in <module>
    Test.assert_equals(sys_call_buffer("get"), "NULL")
    ^^^^
NameError: name 'Test' is not defined. Did you mean: 'test'?

Did you mean 'test'?

999999999 999999999 1999999998
Expected: equal to "Overflow"
Actual: "No overflow or underflow"

It did not overflow though. Am I missing something?

    @test.it("Cut one value")
    def cut_one_value():
        arr = [1,1,2,2,1,7,0,1,3,0,1]
        test.assert_equals(lawnmower(arr, 5, 2), [1,1,2,2,1,0,1,3,0,1])

I have a question about this example.

With a lawnmower of length 5, it will consider the range [0,1,3,0,1]. In this range, the median is 1. However, 3 is more than 2 times the median in this range. So why is 3 not cut?

Wait. Why are we flooring the result?

If we are supposed to write random_valid_key() and random_invalid_key(), then the kata description should specify that. But that doesn't make sense because we can then write trivial implementations of those functions that will make any solution pass.

Still seeing it though. Here is what it looks like when I submit a solution:

NameError: name 'random_valid_key' is not defined

NameError: name 'random_invalid_key' is not defined

Still an issue.

Okay, thanks so much!

LOL. I was actually wondering if the precision issue was part of the challenge.

Can I have some worked examples of the match percentage calculation? What formula do you use to derive the percentage?

The description is fine but the specifics are a mystery to me.