add_done_callback(fn) Attaches the callable fn to the future. fn will be called, with the future as its only

map_async(func, iterable[, chunksize[, callback[, error_callback]]]) A variant of the map() method which returns

class threading.Event Class implementing event objects. An event manages a flag that can be set to true with the set()

clear() Reset the internal flag to false. Subsequently, threads calling wait() will block until set()

get([block[, timeout]]) Remove and return an item from the queue. If optional args block is True (the

class multiprocessing.Process(group=None, target=None, name=None, args=(), kwargs={}, *, daemon=None) Process objects represent

qsize() Return the approximate size of the queue. Because of multithreading/multiprocessing semantics, this number is not reliable

multiprocessing.sharedctypes.copy(obj) Return a ctypes object allocated from shared memory which is a copy of the ctypes object

subprocess.getoutput(cmd) Return output (stdout and stderr) of executing cmd in a shell. Like

class threading.Timer(interval, function, args=None, kwargs=None) Create a timer that will run function with arguments