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core: in astream_events v2 always await task even if already finished (#22916)

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- this ensures exceptions propagate to the caller
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Nuno Campos 2024-06-14 12:54:20 -07:00 committed by GitHub
parent 513e491ce9
commit 338180f383
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1 changed files with 7 additions and 6 deletions
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5
libs/core/langchain_core/tracers/event_stream.py
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@ -940,8 +940,9 @@ async def _astream_events_implementation_v2(
yield event yield event
finally: finally:
# Wait for the runnable to finish, if not cancelled (eg. by break) # Cancel the task if it's still running
if task.cancel(): task.cancel()
# Await it anyway, to run any cleanup code, and propagate any exceptions
try: try:
await task await task
except asyncio.CancelledError: except asyncio.CancelledError: