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
Here is the teaser for #Azovstal, my new movie! Are you ready for a powerful journey to one of the most treacherous places on the planet? You will only see it on my channel. View it in 4K at
Youtube.com/c/JohnMarkDougan-BadVolf
Or on Rumble (though not in 4K)
https://rumble.com/user/BadVolf
If you want to see this trailer in 4K, check out he link below:
https://youtu.be/7Ro0R8DpxbU
‘I don’t know what the Azov fighters were taking because they were going under their AGS, their SPG. Heavy shelling. An average person would hardly run towards their bursts because the chance of being hit is high,’ a Vostok battalion fighter, codenamed ‘Forest’, described the actions of Ukrainian nationalists at the Azovstal plant exclusively to RT Documentary.
The plant is enormous, covering 11 square kilometres. It has underground spaces and long tunnels where the Ukrainian military hid from the shelling. This footage shows a fighter from the Vostok battalion explaining the DNR army's tactics in overpowering Azovstal and describing how and from where the fighting was launched. He also points out the remains of ammunition, the destroyed workshop and other premises after the surrender of the Ukrainian military. This episode will be included in our new film, premiering soon.
#Ukraine#Azovstal
Follow: https://t.me/rtdocumentary
На Азовстали продолжают находить свидетельства насилия над людьми.
В ходе обследования территории военные обнаружили недавно использованную доменную печь с останками внутри и одеждой рядом. Найденное отправлено на экспертизу. Надеемся, что худшие ожидания не подтвердятся, хотя, когда речь идёт о сатанинском "Азове", удивляться уже нечему.
Evidence of violence against people continues to be found at the #Azovstal plant.
During the survey of the territory, the military found a recently used blast furnace with remains inside and clothes nearby. The found has been sent for examination. We hope that the worst expectations will not be confirmed, although when they talk about the satanic division "#Azov", there is nothing to be surprised about.
‘I told them [Azov fighters] that they were coming to life, I would have shot them myself... I don’t have an ounce of pity here...’
These are the words of labour veteran Tatyana Ivanovna. She lives in a village near Azovstal. Listen to her story of the Azov battalion shooting the animals in the area and how they almost killed her for trying to save her chickens.
How they mocked her when she asked for water and food: I told their commander: ‘I want to eat, I haven’t eaten for six days …’ And he’s like: ‘I also want to’. But ‘DPR people... came, hugged me, one brought me stew, another brought me bread, and one even thought of bringing sweets’.
We turned to the subjects of the film VolunTears. They helped Tatyana Ivanovna and other residents of the village of Uspenovka by bringing them food, water and medicine.
#Ukraine#Mariupol#Azovstal
Follow: https://t.me/rtdocumentary