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gh-127949: deprecate asyncio policy classes (#128216)

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Kumar Aditya 2024-12-24 17:30:26 +05:30 • committed by GitHub
parent 3f6a618e49
commit a391d80f4b
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8 changed files with 82 additions and 34 deletions
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14
Lib/asyncio/events.py
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@ -5,7 +5,7 @@
# SPDX-FileCopyrightText: Copyright (c) 2015-2021 MagicStack Inc. http://magic.io
__all__ = (
'AbstractEventLoopPolicy',
'_AbstractEventLoopPolicy',
'AbstractEventLoop', 'AbstractServer',
'Handle', 'TimerHandle',
'_get_event_loop_policy',
@ -632,7 +632,7 @@ class AbstractEventLoop:
raise NotImplementedError
class AbstractEventLoopPolicy:
class _AbstractEventLoopPolicy:
"""Abstract policy for accessing the event loop."""
def get_event_loop(self):
@ -655,7 +655,7 @@ class AbstractEventLoopPolicy:
the current context, set_event_loop must be called explicitly."""
raise NotImplementedError
class BaseDefaultEventLoopPolicy(AbstractEventLoopPolicy):
class _BaseDefaultEventLoopPolicy(_AbstractEventLoopPolicy):
"""Default policy implementation for accessing the event loop.
In this policy, each thread has its own event loop. However, we
@ -758,8 +758,8 @@ def _init_event_loop_policy():
global _event_loop_policy
with _lock:
if _event_loop_policy is None: # pragma: no branch
from . import DefaultEventLoopPolicy
_event_loop_policy = DefaultEventLoopPolicy()
from . import _DefaultEventLoopPolicy
_event_loop_policy = _DefaultEventLoopPolicy()
def _get_event_loop_policy():
@ -777,7 +777,7 @@ def _set_event_loop_policy(policy):
If policy is None, the default policy is restored."""
global _event_loop_policy
if policy is not None and not isinstance(policy, AbstractEventLoopPolicy):
if policy is not None and not isinstance(policy, _AbstractEventLoopPolicy):
raise TypeError(f"policy must be an instance of AbstractEventLoopPolicy or None, not '{type(policy).__name__}'")
_event_loop_policy = policy
@ -838,7 +838,7 @@ if hasattr(os, 'fork'):
def on_fork():
# Reset the loop and wakeupfd in the forked child process.
if _event_loop_policy is not None:
_event_loop_policy._local = BaseDefaultEventLoopPolicy._Local()
_event_loop_policy._local = _BaseDefaultEventLoopPolicy._Local()
_set_running_loop(None)
signal.set_wakeup_fd(-1)