Concurrent Execution

All modules

concurrent.futures

not WASI

Execute computations asynchronously using threads or processes.

© Python Software Foundation. PSF License Version 2 · Official docs ↗

Symbols in concurrent.futures

a

ALL_COMPLETED: The function will return when all futures finish or are cancelled.
as_completed: An iterator over the given futures that yields each as it completes.

b

BrokenExecutor: Raised when an executor has become non-functional after a severe failure.

c

CancelledError: The Future was cancelled.

e

Executor: This is an abstract base class for concrete asynchronous executors.

f

FIRST_COMPLETED: The function will return when any future finishes or is cancelled.
FIRST_EXCEPTION: The function will return when any future finishes by raising an exception.
Future: Represents the result of an asynchronous computation.

i

interpreter.BrokenInterpreterPool: Raised when a worker thread in an InterpreterPoolExecutor failed initializing.
InterpreterPoolExecutor: A ThreadPoolExecutor subclass that executes calls asynchronously using a pool of at most max_workers threads.
InvalidStateError: The operation is not allowed in this state.

p

process.BrokenProcessPool: Raised when a process in a ProcessPoolExecutor terminated abruptly while a future was in the running state.
ProcessPoolExecutor: An Executor subclass that executes calls asynchronously using a pool of at most max_workers processes.

t

thread.BrokenThreadPool: Raised when a worker thread in a ThreadPoolExecutor failed initializing.
ThreadPoolExecutor: An Executor subclass that uses a pool of at most max_workers threads to execute calls asynchronously.
TimeoutError: Timeout expired.

w

wait: Wait for the futures in the given sequence to complete.