python new test frameworks

C#: method name should be PascalCase (Please refer to implementation of backward compatibility here )

Is 14 the correct number of zeros for 32! in base 12? Shouldn't it be 13?

Ruby 3.0 should be enabled.

Python, sample tests:

test.expect(abs(actual - expected) < 1e-4, actual)

This line is incorrect.

There's a compilation warning in C# version:

Fixture.cs(54,9): warning CS0168: The variable 'p' is declared but never used

This problem can be done purely by mathematics, and is definitely not 3kyu. I'd say 5kyu at most.

Any reason why you don't use Rational (aka Data.Ratio.Ratio Integer) or Data.Ratio.Ratio Int instead of Double?