exception concurrent.futures.process.BrokenProcessPool Derived from

stderr Captured stderr from the child process. A bytes sequence, or a string if run() was called with un

class threading.Semaphore(value=1) This class implements semaphore objects. A semaphore manages a counter representing the number

Value(typecode, value) Create an object with a writable value attribute and return a proxy for it.

class multiprocessing.connection.Listener([address[, family[, backlog[, authenticate[, authkey]]]]]) A wrapper for a bound socket

class threading.Condition(lock=None) This class implements condition variable objects. A condition variable allows one or more

recv_bytes([maxlength]) Return a complete message of byte data sent from the other end of the connection as a string. Blocks

class multiprocessing.Event A clone of

get() Remove and return an item from the queue.

join_thread() Join the background thread. This can only be used after close() has been called. It blocks until