Отдельно разберём TaskGroup, который пришел на замену gather в Python 3.11.
Ключевые отличия
▫️create_task() возвращает объект asyncio.Task, у которого есть соответствюущие методы управления. То есть у нас больше контроля
▫️это контекстный менеджер, который гарантирует что все таски будут остановлены по выходу из контекста
▫️ошибка автоматически отменяет незавершенные задачи,
▫️except* передает нам ExceptionGroup, в котором каждую ошибку можно обработать отдельно
import asyncio
import random
async def do_it() -> str:
if random.random() < 0.1:
raise ValueError('Oops')
delay = random.uniform(0.5, 1.5)
await asyncio.sleep(delay)
return delay
async def main():
try:
async with asyncio.TaskGroup() as tg:
for _ in range(10):
tasks.append(tg.create_task(do_it()))
for t in tasks:
print(t.result())
except *ValueError as e:
for err in e.exceptions:
print(err)
asyncio.run(main())
Рекомендую изучить страницу Coroutines and Tasks из документации, где представлено больше интересных примеров и механизмов
- таймауты
- отмена задач
- создание задач из другого потока
#async
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Symptoms include
➡️Fever/severe headache
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➡️Seizures
➡️Muscle/joint pain
➡️Stiff neck
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#Meningitis spreads mostly from one person to another through respiratory droplets e.g. coughing, sneezing & close contact such as kissing
Seek immediate medical attention if you experience these symptoms
Let’s #DefeatMeningitis together.
#Meningitis spreads mostly from one person to another through respiratory droplets e.g. coughing, sneezing & close contact such as kissing
Meningitis can affect anyone at any age. Seek medical attention if you experience symptoms.
Let's take action to #DefeatMeningitis together.
#Meningitis spreads mostly from one person to another through respiratory droplets e.g. coughing, sneezing & close contact such as kissing
Meningitis can affect anyone at any age. Seek medical attention if you experience symptoms
Let's take action to #DefeatMeningitis together
#Meningitis is an inflammation of the membranes around the spinal cord & brain.
Seek medical attention when you experience signs & symptoms such as:
➡️Fever/severe headache
➡️Vomiting
➡️Drowsiness
➡️Rash
➡️Seizures
➡️Muscle/joint pain
➡️Stiff neck
#DefeatMeningitis
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#DefeatMeningitis
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Ensure you complete Nigeria's routine immunisation schedule for your children or wards to keep them safe and #healthy.
#DefeatMeningitis
Vaccination is the best prevention measure against #CerebrospinalMeningitis.
Ensure you complete Nigeria's routine immunisation schedule for your children or wards to keep them #safe from vaccine-preventable diseases.
#DefeatMeningitis
#WorldMeningitisDay