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bpo-39529: Deprecate creating new event loop in asyncio.get_event_loop() (GH-23554)

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asyncio.get_event_loop() emits now a deprecation warning when it creates a new event loop.
In future releases it will became an alias of asyncio.get_running_loop().
This commit is contained in:
Serhiy Storchaka 2021-04-25 13:40:44 +03:00 • committed by GitHub
parent face87c94e
commit 172c0f2752
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16 changed files with 570 additions and 185 deletions
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14
Lib/asyncio/streams.py
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@ -125,7 +125,7 @@ class FlowControlMixin(protocols.Protocol):
def __init__(self, loop=None):
if loop is None:
self._loop = events.get_event_loop()
self._loop = events._get_event_loop(stacklevel=4)
else:
self._loop = loop
self._paused = False
@ -283,9 +283,13 @@ class StreamReaderProtocol(FlowControlMixin, protocols.Protocol):
def __del__(self):
# Prevent reports about unhandled exceptions.
# Better than self._closed._log_traceback = False hack
closed = self._closed
if closed.done() and not closed.cancelled():
closed.exception()
try:
closed = self._closed
except AttributeError:
pass # failed constructor
else:
if closed.done() and not closed.cancelled():
closed.exception()
class StreamWriter:
@ -381,7 +385,7 @@ class StreamReader:
self._limit = limit
if loop is None:
self._loop = events.get_event_loop()
self._loop = events._get_event_loop()
else:
self._loop = loop
self._buffer = bytearray()