class multiprocessing.Semaphore([value]) A semaphore object: a close analog of

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

Popen.returncode The child return code, set by poll() and wait() (and indirectly by communicate())

multiprocessing.connection.Client(address[, family[, authenticate[, authkey]]]) Attempt to set up a connection to the listener

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

send(obj) Send an object to the other end of the connection which should be read using recv().

class multiprocessing.Lock A non-recursive lock object: a close analog of

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

multiprocessing.sharedctypes.Array(typecode_or_type, size_or_initializer, *, lock=True) The same as RawArray()

Queue.full() Return True if the queue is full, False otherwise. If full() returns True