50 lines
1.2 KiB
Python
50 lines
1.2 KiB
Python
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# test uasyncio.gather() function
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try:
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import uasyncio as asyncio
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except ImportError:
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try:
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import asyncio
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except ImportError:
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print("SKIP")
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raise SystemExit
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async def factorial(name, number):
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f = 1
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for i in range(2, number + 1):
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print("Task {}: Compute factorial({})...".format(name, i))
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await asyncio.sleep(0.01)
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f *= i
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print("Task {}: factorial({}) = {}".format(name, number, f))
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return f
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async def task(id):
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print("start", id)
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await asyncio.sleep(0.2)
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print("end", id)
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async def gather_task():
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print("gather_task")
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await asyncio.gather(task(1), task(2))
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print("gather_task2")
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async def main():
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# Simple gather with return values
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print(await asyncio.gather(factorial("A", 2), factorial("B", 3), factorial("C", 4)))
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# Cancel a multi gather
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# TODO doesn't work, Task should not forward cancellation from gather to sub-task
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# but rather CancelledError should cancel the gather directly, which will then cancel
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# all sub-tasks explicitly
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# t = asyncio.create_task(gather_task())
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# await asyncio.sleep(0.1)
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# t.cancel()
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# await asyncio.sleep(0.01)
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asyncio.run(main())
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