# Created on savesnippets.com · https://savesnippets.com/dcRfTg7kkjgST5
from typing import Literal, assert_never

Status = Literal["draft", "published", "archived"]

def describe(status: Status) -> str:
    match status:
        case "draft":     return "Not yet visible"
        case "published": return "Live to readers"
        case "archived":  return "Hidden but preserved"
        case _:           assert_never(status)   # mypy enforces this

print(describe("draft"))       # Not yet visible
# describe("deleted")          # mypy error: not a Status literal