diff options
Diffstat (limited to 'Doc/library/concurrent.futures.rst')
| -rw-r--r-- | Doc/library/concurrent.futures.rst | 19 |
1 files changed, 2 insertions, 17 deletions
diff --git a/Doc/library/concurrent.futures.rst b/Doc/library/concurrent.futures.rst index 3c8d9ab111e..dd92765038c 100644 --- a/Doc/library/concurrent.futures.rst +++ b/Doc/library/concurrent.futures.rst @@ -265,7 +265,7 @@ Each worker's interpreter is isolated from all the other interpreters. "Isolated" means each interpreter has its own runtime state and operates completely independently. For example, if you redirect :data:`sys.stdout` in one interpreter, it will not be automatically -redirected any other interpreter. If you import a module in one +redirected to any other interpreter. If you import a module in one interpreter, it is not automatically imported in any other. You would need to import the module separately in interpreter where you need it. In fact, each module imported in an interpreter is @@ -287,7 +287,7 @@ efficient alternative is to serialize with :mod:`pickle` and then send the bytes over a shared :mod:`socket <socket>` or :func:`pipe <os.pipe>`. -.. class:: InterpreterPoolExecutor(max_workers=None, thread_name_prefix='', initializer=None, initargs=(), shared=None) +.. class:: InterpreterPoolExecutor(max_workers=None, thread_name_prefix='', initializer=None, initargs=()) A :class:`ThreadPoolExecutor` subclass that executes calls asynchronously using a pool of at most *max_workers* threads. Each thread runs @@ -305,20 +305,9 @@ the bytes over a shared :mod:`socket <socket>` or interpreter. .. note:: - Functions defined in the ``__main__`` module cannot be pickled - and thus cannot be used. - - .. note:: The executor may replace uncaught exceptions from *initializer* with :class:`~concurrent.futures.interpreter.ExecutionFailed`. - The optional *shared* argument is a :class:`dict` of objects that all - interpreters in the pool share. The *shared* items are added to each - interpreter's ``__main__`` module. Not all objects are shareable. - Shareable objects include the builtin singletons, :class:`str` - and :class:`bytes`, and :class:`memoryview`. See :pep:`734` - for more info. - Other caveats from parent :class:`ThreadPoolExecutor` apply here. :meth:`~Executor.submit` and :meth:`~Executor.map` work like normal, @@ -326,10 +315,6 @@ except the worker serializes the callable and arguments using :mod:`pickle` when sending them to its interpreter. The worker likewise serializes the return value when sending it back. -.. note:: - Functions defined in the ``__main__`` module cannot be pickled - and thus cannot be used. - When a worker's current task raises an uncaught exception, the worker always tries to preserve the exception as-is. If that is successful then it also sets the ``__cause__`` to a corresponding |