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
Indian floods leave dozens dead
At least 22 people were killed after heavy rains lashed the south Indian state of Kerala over the weekend, officials said.
#News#Reuters#India#Floods
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Good idea: trees instead of barriers
https://www.bbc.com/news/articles/cqxdxg7j3qgo
After that devastating day, a group of villagers came together with an idea - they would plant trees, thousands of them, to try to reduce the risk of flooding in the future.
Trees and woods play a "vital" role in reducing flooding by slowing down the flow of rainwater, absorbing rainwater and reducing erosion, according to the Woodland Trust.
#trees , #floods, #wales
https://ieji.de/@MinistryOfGoodIdeas/116283802113284702
Flood waters didn't stop this Thai BBQ restaurant
Instead of closing for floods, Titiporn Jutimanon's riverside eatery is making waves in Thailand, staying open for customers who are reveling the shin-deep dining experience.
#Thailand#floods#News#Reuters#TitipornJutimanon
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Emergency Hepatitis A Vaccination Launched in Flooded Areas of Dagestan
In response to increased infection risks following recent floods, Dagestan has begun urgent vaccination against Hepatitis A in affected regions. Authorities emphasize strict hygiene and urge residents to seek medical help at the first signs of illness. The regional Health Ministry stated, "Our main goal is to prevent disease spread and protect public health."
#Dagestan#HepatitisA#Vaccination#Floods#Healthcare
The main news of Russia and the world ishere.
#China#Flooding#Fujian#HeavyRain#Floods#climate#destruction#anomaly#climatecrisis
🇨🇳Наводнение в провинции Фуцзянь, Китай🌧️
🌊 23 апреля 2026 года сильные дожди продолжались в Фуцзяне и соседних регионах, вызывая локальные наводнения на улицах и в низменных районах. Видео показывают затопленные дороги и дренажные системы, работающие на полную мощность.
📅 По данным Министерства водных ресурсов Китая и государственного телеканала CCTV, наводнения ожидаются в апреле-мае 2026 года в Фуцзяне, Чжэцзяне и дельте реки Чжуцзян, причем уровень воды может превысить предупредительные пороги.
ℹ️ В настоящее время нет официальных сообщений о крупных жертвах или широкомасштабных разрушениях в Фуцзяне в последние дни, но местные метеорологические службы продолжают следить за ситуацией.
📎 Источник: Reuters
October 18, 2021: U.S missionaries, China economy, Robert Durst, India floods, California oil spill
October 18, 2021: U.S missionaries, China economy, Robert Durst, India floods, California oil spill
1. A U.S. Christian aid organization said a group of its missionaries had been kidnapped in Haiti, a further sign the Caribbean nation's gangs are growing increasingly brazen amid political and economic crises.
2. China’s economy hit its slowest pace of growth in a year in the third quarter, hurt by power shortages and wobbles in the property sector, highlighting the challenge facing policymakers as they seek to prop up a faltering recovery while reining in the real estate sector.
3. Leaders in the south Indian state of Kerala opened near-overflowing dams on Monday, after at least 22 people died when heavy rains lashed the state over the weekend.
4. Real estate heir Robert Durst, who was sentenced this week to life in prison for murdering a friend in 2000, has COVID and is on a ventilator, his lawyer told the Los Angeles Times.
5. The U.S. Coast Guard boarded a container ship in the Port of Long Beach that dragged its anchor close to a subsea pipeline found to be the source of an oil spill off Orange County, California, it said in a press release.
#Haiti
#US
#Missionaries
#China
#Economy
#RobertDurst
#India
#floods
#Kerala
#California
#OilSpill
#Caribbean
#News
#Reuters
#MorningNews
#Headlines
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