python:实现prefix conversions string前缀转换字符串算法
from __future__ import annotations
from enum import Enum, unique
from typing import TypeVar
# Create a generic variable that can be 'Enum', or any subclass.
T = TypeVar("T", bound="Enum"
from __future__ import annotations
from enum import Enum, unique
from typing import TypeVar
# Create a generic variable that can be 'Enum', or any subclass.
T = TypeVar("T", bound="Enum"