class asyncio.BoundedSemaphore(value=1, *, loop=None) A bounded semaphore implementation. Inherit from Semaphore

release() Release a lock. When the lock is locked, reset it to unlocked, and return. If any

coroutine asyncio.open_connection(host=None, port=None, *, loop=None, limit=None, **kwds) A wrapper for

done() Return True if the future is done. Done means either that a result / exception are available

Asynchronous programming is different than classical “sequential” programming. This page lists common traps and explains how to avoid them. 1

consumed Total number of to be consumed bytes.

asyncio.gather(*coros_or_futures, loop=None, return_exceptions=False) Return a future aggregating results from the given coroutine

class selectors.PollSelector

devpoll.poll([timeout]) Polls the set of registered file descriptors, and returns a possibly-empty list containing (fd

get_key(fileobj) Return the key associated with a registered file object. This returns the