prettify python lambda into javascript style arrow function. does not changes actual symbol.

arrow_lambda_py.settings.json

{  
  "symbolMasks.masks": [
      {
        "language": "python",
        "patterns": [
          {
            "pattern": "(lambda)|(?<=lambda).?\\s?|(?<=lambda[^:]*):",
            "replace": {
              "lambda": { "text": "λ" },
              ": ": { "text": "() => " },
              " ": { "text": "(" },
              ":": { "text": ") =>" }
            }
          }
        ]
      }
    ],
}