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This is an implementation of InterpreterPoolExecutor that builds on ThreadPoolExecutor. (Note that this is not tied to PEP 734, which is strictly about adding a new stdlib module.) Possible future improvements: * support passing a script for the initializer or to submit() * support passing (most) arbitrary functions without pickling * support passing closures * optionally exec functions against __main__ instead of the their original module
64 lines
1.9 KiB
Python
64 lines
1.9 KiB
Python
# Copyright 2009 Brian Quinlan. All Rights Reserved.
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# Licensed to PSF under a Contributor Agreement.
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"""Execute computations asynchronously using threads or processes."""
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__author__ = 'Brian Quinlan (brian@sweetapp.com)'
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from concurrent.futures._base import (FIRST_COMPLETED,
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FIRST_EXCEPTION,
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ALL_COMPLETED,
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CancelledError,
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TimeoutError,
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InvalidStateError,
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BrokenExecutor,
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Future,
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Executor,
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wait,
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as_completed)
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__all__ = (
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'FIRST_COMPLETED',
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'FIRST_EXCEPTION',
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'ALL_COMPLETED',
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'CancelledError',
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'TimeoutError',
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'InvalidStateError',
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'BrokenExecutor',
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'Future',
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'Executor',
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'wait',
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'as_completed',
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'InterpreterPoolExecutor',
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'ProcessPoolExecutor',
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'ThreadPoolExecutor',
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)
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def __dir__():
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return __all__ + ('__author__', '__doc__')
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def __getattr__(name):
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global ProcessPoolExecutor, ThreadPoolExecutor, InterpreterPoolExecutor
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if name == 'ProcessPoolExecutor':
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from .process import ProcessPoolExecutor as pe
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ProcessPoolExecutor = pe
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return pe
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if name == 'ThreadPoolExecutor':
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from .thread import ThreadPoolExecutor as te
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ThreadPoolExecutor = te
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return te
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if name == 'InterpreterPoolExecutor':
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try:
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from .interpreter import InterpreterPoolExecutor as ie
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except ModuleNotFoundError:
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ie = InterpreterPoolExecutor = None
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else:
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InterpreterPoolExecutor = ie
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return ie
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raise AttributeError(f"module {__name__!r} has no attribute {name!r}")
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