join(timeout=None) Wait until the thread terminates. This blocks the calling thread until the thread whose join()

release() Release a lock, decrementing the recursion level. If after the decrement it is zero, reset the lock to unlocked (not

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

cmd Command that was used to spawn the child process.

put(obj[, block[, timeout]]) Put obj into the queue. If the optional argument block is True (the default)

class subprocess.Popen(args, bufsize=-1, executable=None, stdin=None, stdout=None, stderr=None, preexec_fn=None, close_fds=True, shell=False, cwd=None, env=None, un

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

exitcode The child’s exit code. This will be None if the process has not yet terminated. A negative value -N

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

result(timeout=None) Return the value returned by the call. If the call hasn’t yet completed then this method will wait up to