from typing import Any, Callable, List, Optional, Tuple, Type, Union

from django.apps.config import AppConfig
from django.db.models.base import Model
from django.test.testcases import SimpleTestCase

NONE_ID: Any
NO_RECEIVERS: Any

class Signal:
    receivers: Any = ...
    providing_args: Any = ...
    lock: Any = ...
    use_caching: Any = ...
    sender_receivers_cache: Any = ...
    def __init__(self, providing_args: List[str] = ..., use_caching: bool = ...) -> None: ...
    def connect(
        self,
        receiver: Any,
        sender: Optional[Union[Type[Model], AppConfig, SimpleTestCase]] = ...,
        weak: bool = ...,
        dispatch_uid: Optional[str] = ...,
    ) -> None: ...
    def disconnect(
        self,
        receiver: Optional[Callable] = ...,
        sender: Optional[Union[Type[Model], AppConfig, SimpleTestCase]] = ...,
        dispatch_uid: Optional[str] = ...,
    ) -> bool: ...
    def has_listeners(self, sender: Any = ...) -> bool: ...
    def send(self, sender: Any, **named: Any) -> List[Tuple[Callable, Optional[str]]]: ...
    def send_robust(self, sender: SimpleTestCase, **named: Any) -> List[Tuple[Callable, Union[ValueError, str]]]: ...

def receiver(signal: Union[List[Signal], Signal], **kwargs: Any) -> Callable: ...