import collections
from collections import OrderedDict
from typing import Any, Dict, List, Tuple, Union

from django.core.exceptions import ImproperlyConfigured
from django.template.backends.base import BaseEngine


class InvalidTemplateEngineError(ImproperlyConfigured): ...

class EngineHandler:
    templates: collections.OrderedDict
    def __init__(
        self, templates: List[Dict[str, Union[Dict[str, bool], str]]] = ...
    ) -> None: ...
    def templates(self) -> OrderedDict: ...
    def __getitem__(self, alias: str) -> BaseEngine: ...
    def __iter__(self) -> Any: ...
    def all(self) -> List[BaseEngine]: ...

def get_app_template_dirs(dirname: str) -> Tuple: ...