"""Modules that implement cache policy, based on a combination of standard HTTP headers and
additional settings and features specific to requests-cache.
"""
# flake8: noqa: E402,F401
# isort: skip_file
from datetime import datetime, timedelta
from typing import Callable, Dict, Union, MutableMapping

from requests import Response

ExpirationTime = Union[None, int, float, str, datetime, timedelta]
ExpirationPatterns = Dict[str, ExpirationTime]
FilterCallback = Callable[[Response], bool]
KeyCallback = Callable[..., str]
HeaderDict = MutableMapping[str, str]


from .expiration import *
from .settings import *
from .directives import CacheDirectives, set_request_headers
from .actions import CacheActions