asyncio.as_completed(fs, *, loop=None, timeout=None) Return an iterator whose values, when waited for, are Future

class selectors.SelectSelector

select.poll() (Not supported by all operating systems.) Returns a polling object, which supports registering and unregistering

set_transport(transport) Set the transport.

is_set() Return True if and only if the internal flag is true.

empty() Return True if the queue is empty, False otherwise.

epoll.close() Close the control file descriptor of the epoll object.

Protocol.data_received(data) Called when some data is received. data is a non-empty bytes object containing the incoming

class asyncio.Server Server listening on sockets. Object created by the AbstractEventLoop

epoll.fileno() Return the file descriptor number of the control fd.