Три способа выполнить множество задач с asyncio
Функция для примера:
async def do_it(n):
await asyncio.sleep(random.uniform(0.5, 1))
return n
1. Последовательный вызов
async def main():
for i in range(100):
result = await do_it(i)
Такой вызов имеет смысл только тогда, когда результат одной задачи требуется для вызова следующей.
Если они независимы, то это антипаттерн, так как аналогичен простому синхронному вызову по очереди.
2. Упорядоченный результат
async def main():
tasks = [do_it(i) for i in range(100)]
results = await asyncio.gather(*tasks)
Выполняет корутины конкурентно и возвращает результат в виде списка.
Полезен когда требуется получить результаты в том же порядке в котором задачи отправлены.
3. Результат по мере готовности
tasks = [asyncio.create_task(do_it(i)) for i in range(100)]
for cor in asyncio.as_completed(tasks):
result = await cor
Так же выполняет корутины конкурентно, но не гарантирует порядок. Результат возвращается по мере готовности, каждый отдельно.
Полезен когда нужно обработать любой ответ как можно скорее.
#async
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🔗
https://ncdc.gov.ng/diseases/sitreps/?cat=6&name=An%20Update%20of%20Meningitis%20Outbreak%20in%20Nigeria
We have published our latest situation report on #CerebrospinalMeningitis.
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Ensure you complete the routine immunisation for your children or wards to keep them safe and #healthy.
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Download our latest #CSM situation report for a summary of the disease situation and our response activities
🔗https://ncdc.gov.ng/diseases/sitreps/?cat=6&name=An%20Update%20of%20Meningitis%20Outbreak%20in%20Nigeria
#TakeResponsibility
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 and #healthy.
#DefeatMeningitis
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Know the signs and symptoms to report early to a healthcare facility when noticed.
#CerebrospinalMeningitis is a MEDICAL EMERGENCY!
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🔗
https://youtu.be/ZhZdin-Cn9s?feature=shared
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