scrapy.signalmanager.SignalManager

Method	`connect`	Connect a receiver function to a signal.
Method	`disconnect`	Disconnect a receiver function from a signal. This has the opposite effect of the `connect` method, and the arguments are the same.
Method	`disconnect_all`	Disconnect all receivers from the given signal.
Method	`send_catch_log`	Send a signal, catch exceptions and log them.
Method	`send_catch_log_deferred`	Like `send_catch_log` but supports returning `~twisted.internet.defer.Deferred` objects from signal handlers.
Method	`__init__`	Undocumented
Instance Variable	`sender`	Undocumented

def connect(self, receiver, signal, **kwargs):

Connect a receiver function to a signal.

The signal can be any object, although Scrapy comes with some predefined signals that are documented in the :ref:`topics-signals` section.

Parameters
receiver:collections.abc.Callable	the function to be connected
signal:object	the signal to connect to
**kwargs	Undocumented

def disconnect(self, receiver, signal, **kwargs):

Disconnect a receiver function from a signal. This has the opposite effect of the connect method, and the arguments are the same.

def disconnect_all(self, signal, **kwargs):

Disconnect all receivers from the given signal.

Parameters
signal:object	the signal to disconnect from
**kwargs	Undocumented

def send_catch_log(self, signal, **kwargs):

Send a signal, catch exceptions and log them.

The keyword arguments are passed to the signal handlers (connected through the connect method).

def send_catch_log_deferred(self, signal, **kwargs):

Like send_catch_log but supports returning ~twisted.internet.defer.Deferred objects from signal handlers.

Returns a Deferred that gets fired once all signal handlers deferreds were fired. Send a signal, catch exceptions and log them.

The keyword arguments are passed to the signal handlers (connected through the connect method).

def __init__(self, sender=dispatcher.Anonymous):

Undocumented

sender =

Undocumented