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import asyncio | |
import random | |
async def slow_action(): | |
await asyncio.sleep(random.randrange(1, 5)) | |
async def my_range(n): | |
i = 0 | |
while i < n: | |
await slow_action() | |
yield i | |
i += 1 | |
async def example(task_id, n): | |
async for i in my_range(n): | |
print(f'[{task_id}] async for {i}') | |
if __name__ == '__main__': | |
loop = asyncio.get_event_loop() | |
tasks = [loop.create_task(example(i, 10)) for i in range(4)] | |
try: | |
app = loop.run_until_complete( | |
asyncio.wait(tasks) | |
) | |
finally: | |
loop.close() |
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