AbstractEventLoop.add_writer(fd, callback, *args) Start watching the file descriptor for write availability and then call the callback with specified arguments. Use functools.partial to pass keywords to the callback.

AbstractEventLoop.call_later(delay, callback, *args) Arrange for the callback to be called after the given delay seconds (either an int or float). An instance of asyncio.Handle is returned, which can be used to cancel the callback. callback will be called exactly once per call to call_later(). If two callbacks are scheduled for exactly the same time, it is undefined which will be called first. The optional positional args will be passed to the callback when it is called. If you want the call

AbstractEventLoop.call_at(when, callback, *args) Arrange for the callback to be called at the given absolute timestamp when (an int or float), using the same time reference as AbstractEventLoop.time(). This method’s behavior is the same as call_later(). An instance of asyncio.Handle is returned, which can be used to cancel the callback. Use functools.partial to pass keywords to the callback.

AbstractEventLoop.call_exception_handler(context) Call the current event loop exception handler. context is a dict object containing the following keys (new keys may be introduced later): ‘message’: Error message; ‘exception’ (optional): Exception object; ‘future’ (optional): asyncio.Future instance; ‘handle’ (optional): asyncio.Handle instance; ‘protocol’ (optional): Protocol instance; ‘transport’ (optional): Transport instance; ‘socket’ (optional): socket.socket instance. Note Note: thi

AbstractEventLoop.add_signal_handler(signum, callback, *args) Add a handler for a signal. Raise ValueError if the signal number is invalid or uncatchable. Raise RuntimeError if there is a problem setting up the handler. Use functools.partial to pass keywords to the callback.

class asyncio.AbstractEventLoop Abstract base class of event loops. This class is not thread safe.

AbstractEventLoop.add_reader(fd, callback, *args) Start watching the file descriptor for read availability and then call the callback with specified arguments. Use functools.partial to pass keywords to the callback.

New in version 3.4. Source code: Lib/asyncio/ Note The asyncio package has been included in the standard library on a provisional basis. Backwards incompatible changes (up to and including removal of the module) may occur if deemed necessary by the core developers. This module provides infrastructure for writing single-threaded concurrent code using coroutines, multiplexing I/O access over sockets and other resources, running network clients and servers, and other related primitives. Here i

async_chat.push(data) Pushes data on to the channel’s fifo to ensure its transmission. This is all you need to do to have the channel write the data out to the network, although it is possible to use your own producers in more complex schemes to implement encryption and chunking, for example.

async_chat.push_with_producer(producer) Takes a producer object and adds it to the producer fifo associated with the channel. When all currently-pushed producers have been exhausted the channel will consume this producer’s data by calling its more() method and send the data to the remote endpoint.