ReferenceError: alphabet is not defined

    at /workspace/node/test.js:25:32
    at Object.<anonymous> (/workspace/node/test.js:105:3)
    at Module._compile (node:internal/modules/cjs/loader:1159:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1213:10)
    at Module.load (node:internal/modules/cjs/loader:1037:32)
    at Module._load (node:internal/modules/cjs/loader:878:12)
    at ModuleWrap.<anonymous> (node:internal/modules/esm/translators:169:29)
    at ModuleJob.run (node:internal/modules/esm/module_job:193:25)
    at async Promise.all (index 0)
    at async ESMLoader.import (node:internal/modules/esm/loader:530:24)
    at async importModuleDynamicallyWrapper (node:internal/vm/module:438:15)
    at async formattedImport (/workspace/node/node_modules/.pnpm/mocha@10.2.0/node_modules/mocha/lib/nodejs/esm-utils.js:9:14)
    at async exports.requireOrImport (/workspace/node/node_modules/.pnpm/mocha@10.2.0/node_modules/mocha/lib/nodejs/esm-utils.js:42:28)
    at async exports.loadFilesAsync (/workspace/node/node_modules/.pnpm/mocha@10.2.0/node_modules/mocha/lib/nodejs/esm-utils.js:100:20)
    at async singleRun (/workspace/node/node_modules/.pnpm/mocha@10.2.0/node_modules/mocha/lib/cli/run-helpers.js:125:3)
    at async exports.handler (/workspace/node/node_modules/.pnpm/mocha@10.2.0/node_modules/mocha/lib/cli/run.js:370:5)

The width of the "C" is 4 in description but 5 in tests.

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Missing imports

• Sample tests:

import codewars_test as test
from solution import same_color_probability

• Full tests:

from solution import same_color_probability

When all issues are solved you can republish the kata.

At least javascript:

• Tests should fail without errors if the result is not an array.
• Tests should accept pairs [a,b] where a > b (descritpion explicitly says that 256 -> [[8,2],...] is valid).

Duplicate?

• Returning different types (tuple/int) is bad practice. If there isn't a valid result, the function should raise an exception or return a no-value like None.
• Random tests should always generate at least one case with elves > cookies.

f'Preparing to censor {e!r}'

Python:

test.assert_equals(type(actual) in types, True, message)
=>
test.expect(isinstance(actual, types), message)   # avoid confusing "False should equal True" message

• Don't test length/values if actual is not a tuple.
• Don't call assert_approx_equals if len(actual) < 2 or actual[i] is not a number(*)

(*) IMHO this is a bug in test_approx_equals, it should fail without raising exceptions if the value is not a number.

Python: function name should be snake_case

• No sample tests
• No random tests

There is also test.assert_equals(censor(),'') without args.

$\left\lfloor\frac{\hbox{(sum of integers)}}{\hbox{(an integer)}}\right\rfloor$ is the quotient of an integer division, no floats, no rounding problems.