Option is bubkes if the language itself still has the billion-dollar mistake; that's why F# and Scala are far less practical than OCaml. Python also has it with

Option is bubkes if the language itself still has the billion-dollar mistake; that's why F# and Scala are far less practical than OCaml. Python also has it with "None" (though since it is dynamically typed, it's arguable that from the perspective of any given type, every value of every other type is a fresh instance of the billion-dollar mistake). And sadly, removing None from Python and replacing it by Option - let alone removing Exception and letting Result (aka Either) take its rightful place - would cause huge amount of Python code to need rewriting. And it wouldn't even be worth it because of dynamic typing.