Welcome to multiprocessing’s documentation!

Contents:

• multiprocessing — Process-based parallelism
  • Introduction
    • The Process class
    • Exchanging objects between processes
    • Synchronization between processes
    • Sharing state between processes
    • Using a pool of workers
  • Reference
    • Process and exceptions
      • Process
        • Process.run()
        • Process.start()
        • Process.join()
        • Process.name
        • Process.is_alive()
        • Process.daemon
        • Process.pid
        • Process.exitcode
        • Process.authkey
        • Process.sentinel
        • Process.terminate()
      • BufferTooShort
    • Pipes and Queues
      • Pipe()
      • Queue
        • Queue.qsize()
        • Queue.empty()
        • Queue.full()
        • Queue.put()
        • Queue.put_nowait()
        • Queue.get()
        • Queue.get_nowait()
        • Queue.get_no_wait()
        • Queue.close()
        • Queue.join_thread()
        • Queue.cancel_join_thread()
      • SimpleQueue
        • SimpleQueue.empty()
        • SimpleQueue.get()
        • SimpleQueue.put()
      • JoinableQueue
        • JoinableQueue.task_done()
        • JoinableQueue.join()
    • Miscellaneous
      • active_children()
      • cpu_count()
      • current_process()
      • freeze_support()
      • set_executable()
    • Connection Objects
      • Connection
        • Connection.send()
        • Connection.recv()
        • Connection.fileno()
        • Connection.close()
        • Connection.poll()
        • Connection.send_bytes()
        • Connection.recv_bytes()
        • Connection.recv_bytes_into()
    • Synchronization primitives
      • BoundedSemaphore
      • Condition
      • Event
      • Lock
      • RLock
      • Semaphore
    • Shared ctypes Objects
      • Value()
      • Array()
      • The multiprocessing.sharedctypes module
        • RawArray()
        • RawValue()
        • Array()
        • Value()
        • copy()
        • synchronized()
    • Managers
      • multiprocessing.Manager()
      • BaseManager
        • BaseManager.start()
        • BaseManager.get_server()
        • BaseManager.connect()
        • BaseManager.shutdown()
        • BaseManager.register()
        • BaseManager.address
      • SyncManager
        • SyncManager.BoundedSemaphore()
        • SyncManager.Condition()
        • SyncManager.Event()
        • SyncManager.Lock()
        • SyncManager.Namespace()
        • SyncManager.Queue()
        • SyncManager.RLock()
        • SyncManager.Semaphore()
        • SyncManager.Array()
        • SyncManager.Value()
        • SyncManager.dict()
        • SyncManager.list()
      • Namespace objects
      • Customized managers
      • Using a remote manager
    • Proxy Objects
      • BaseProxy
        • BaseProxy._callmethod()
        • BaseProxy._getvalue()
        • BaseProxy.__repr__()
        • BaseProxy.__str__()
      • Cleanup
    • Process Pools
      • multiprocessing.Pool
        • multiprocessing.Pool.apply()
        • multiprocessing.Pool.apply_async()
        • multiprocessing.Pool.map()
        • multiprocessing.Pool.map_async()
        • multiprocessing.Pool.imap()
        • multiprocessing.Pool.imap_unordered()
        • multiprocessing.Pool.starmap()
        • multiprocessing.Pool.starmap_async()
        • multiprocessing.Pool.close()
        • multiprocessing.Pool.terminate()
        • multiprocessing.Pool.join()
      • AsyncResult
        • AsyncResult.get()
        • AsyncResult.wait()
        • AsyncResult.ready()
        • AsyncResult.successful()
    • Listeners and Clients
      • deliver_challenge()
      • answerChallenge()
      • Client()
      • Listener
        • Listener.accept()
        • Listener.close()
        • Listener.address
        • Listener.last_accepted
      • wait()
      • AuthenticationError
      • Address Formats
    • Authentication keys
    • Logging
      • get_logger()
      • log_to_stderr()
    • The multiprocessing.dummy module
  • Programming guidelines
    • All platforms
    • Windows
  • Examples
• Glossary

Indices and tables

• Index

• Module Index

• Search Page