exception threading.BrokenBarrierError This exception, a subclass of

multiprocessing.freeze_support() Add support for when a program which uses multiprocessing has been frozen to produce

multiprocessing.current_process() Return the Process object corresponding to the current process.

threading.enumerate() Return a list of all Thread objects currently alive. The list includes daemonic threads,

class multiprocessing.JoinableQueue([maxsize]) JoinableQueue, a Queue subclass, is a queue which additionally

subprocess.check_call(args, *, stdin=None, stdout=None, stderr=None, shell=False, timeout=None) Run command with arguments.

__repr__() Return a representation of the proxy object.

is_alive() Return whether the thread is alive. This method returns True just before

recv() Return an object sent from the other end of the connection using send(). Blocks until there its something

parties The number of threads required to pass the barrier.