import asyncio
from aiohttp import Timeout
async def main():
try:
with Timeout(1) as t1:
with Timeout(1) as t2:
await asyncio.sleep(2)
except asyncio.TimeoutError as exc:
# Which one of timers raised this `exc`?
# Something like:
# get_caller(exc) is t1 -> False
# get_caller(exc) is t2 -> True
pass
if __name__ == '__main__':
loop = asyncio.get_event_loop()
loop.run_until_complete(main())
由于两个计时器具有相同的超时,因此它们都可以提高TimeoutError
。我想知道是哪一个做的。可能吗?
async def main_async():
try:
with NamedTimeout('outer', 0.5) as t1:
with NamedTimeout('inner', 0.3) as t2:
await asyncio.sleep(2)
except asyncio.TimeoutError as e:
print(e.timeout_name)
class NamedTimeout(Timeout):
def __init__(self, name, timeout, *, loop=None):
super().__init__(timeout, loop=loop)
self.name = name
def __exit__(self, exc_type, exc_val, exc_tb):
try:
super().__exit__(exc_type, exc_val, exc_tb)
except asyncio.TimeoutError as e:
e.timeout_name = self.name
raise
如果您更改超时值,您将看到它始终打印出较短超时的名称。