name The process’s name. The name is a string used for identification purposes only. It has no semantics. Multiple processes

close() Indicate that no more data will be put on this queue by the current process. The background thread will quit once it

concurrent.futures.wait(fs, timeout=None, return_when=ALL_COMPLETED) Wait for the Future instances (possibly created

acquire(*args) Acquire the underlying lock. This method calls the corresponding method on the underlying lock; the return value

get_nowait() Equivalent to get(False).

release() Release a lock. This can be called from any thread, not only the thread which has acquired the lock.

dict() dict(mapping) dict(sequence) Create a shared dict

exception subprocess.SubprocessError Base class for all other exceptions from this module.

cancelled() Return True if the call was successfully cancelled.

wait(timeout=None) Pass the barrier. When all the threads party to the barrier have called this function, they are all released