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FIX: do not create a new event loop so often #1718

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FIX: do not create a new event loop so often #1718

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23 changes: 15 additions & 8 deletions src/prompt_toolkit/eventloop/utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -103,18 +103,25 @@ def get_traceback_from_context(context: Dict[str, Any]) -> Optional[TracebackTyp
return None


__loop_created = False


def get_event_loop() -> asyncio.AbstractEventLoop:
"""Backward compatible way to get the event loop"""
# Python 3.6 doesn't have get_running_loop
# Python 3.10 deprecated get_event_loop
if sys.version_info >= (3, 7):
getloop = asyncio.get_running_loop
else:
getloop = asyncio.get_event_loop

try:
return getloop()
if sys.version_info >= (3, 7):
return asyncio.get_running_loop()
else:
return asyncio.get_event_loop()

except RuntimeError:
loop = asyncio.new_event_loop()
asyncio.set_event_loop(loop)
return loop
global __loop_created
if not __loop_created:
loop = asyncio.new_event_loop()
asyncio.set_event_loop(loop)
__loop_created = True

return asyncio.get_event_loop()