from enum import IntEnum
from typing import Optional

class Status(IntEnum):
    READY = 0
    WAITING = 1
    MAYBE = 2

values = [
    Status.READY,
    Status.WAITING,
    Status.MAYBE]

def format(status: Status) -> str:
    if status == Status.READY:
        return "Ready"
    elif status == Status.WAITING:
        return "Waiting"
    elif status == Status.MAYBE:
        return "Maybe"

def parse(string: str) -> Optional[Status]:
    if string == "Ready":
        return Status.READY
    elif string == "Waiting":
        return Status.WAITING
    elif string == "Maybe":
        return Status.MAYBE
    else:
        return None