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
🌍 The lithosphere, atmosphere, hydrosphere, and biosphere constantly exchange matter—volcanic eruptions can shoot minerals into the air that later fall into oceans, nourishing marine life far away. ✨
#lithosphere⚡#atmosphere⚡#hydrosphere⚡#geography⚡#nature⚡#earth
👉subscribe Amazing Geography
👉more Channels
🌍 When huge dust storms sweep across deserts, fine particles from the lithosphere reach the atmosphere, circle the globe, and even fertilize distant rainforests—linking Earth’s spheres in invisible ways. ✨
#lithosphere⚡#atmosphere⚡#hydrosphere⚡#geography⚡#nature⚡#earth
👉subscribe Amazing Geography
👉more Channels
🌍 A single major volcanic eruption links all of Earth’s spheres—rock and magma from the lithosphere, gas and ash in the atmosphere, water vapor in the hydrosphere, and rapid changes in the biosphere. ✨
#lithosphere⚡#atmosphere⚡#hydrosphere⚡#geography⚡#nature⚡#earth
👉subscribe Amazing Geography
👉more Channels
🌍 The hydrosphere holds less than 0.01% of Earth's water in rivers and lakes, while most is locked in glaciers, ice caps, or underground. These hidden reserves link all of Earth’s spheres. ✨
#hydrosphere⚡#lithosphere⚡#biosphere⚡#geography⚡#nature⚡#earth
👉subscribe Amazing Geography
👉more Channels
🌍 The deepest part of the ocean, the Mariana Trench, reaches nearly 11,000 meters below sea level. Here, the hydrosphere, lithosphere, and biosphere all meet in extreme conditions. ✨
#hydrosphere⚡#lithosphere⚡#biosphere⚡#geography⚡#nature⚡#earth
👉subscribe Amazing Geography🌍
🌍 The deepest point on land, the Dead Sea Depression, lies about 430 meters below sea level, linking the lithosphere, atmosphere, hydrosphere, and biosphere in an extreme environment for life. ✨
#lithosphere⚡#hydrosphere⚡#biosphere⚡#geography⚡#nature⚡#earth
👉subscribe Amazing Geography🌍
🌍 At the bottom of Antarctica’s ice lies a vast liquid lake called Lake Vostok, sealed under 4 kilometers of ice. This hidden hydrosphere supports unique life forms adapted to total darkness. ✨
#hydrosphere⚡#Antarctica⚡#secrets⚡#geography⚡#nature⚡#earth
👉subscribe Amazing Geography🌍