exception concurrent.futures.TimeoutError Raised when a future operation exceeds the given timeout.

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

Popen.poll() Check if child process has terminated. Set and return returncode attribute.

scheduler.cancel(event) Remove the event from the queue. If event is not an event currently in the queue, this method

_thread.allocate_lock() Return a new lock object. Methods of locks are described below. The lock is initially unlocked.

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

sentinel A numeric handle of a system object which will become “ready” when the process ends. You

exception multiprocessing.BufferTooShort Exception raised by Connection.recv_bytes_into() when the supplied buffer

exception multiprocessing.AuthenticationError Raised when there is an authentication error.

class concurrent.futures.ProcessPoolExecutor(max_workers=None) An Executor subclass that executes calls asynchronously