Hi,
I was wondering if anyone has had experience implementing a similar pattern
to this or has alternative suggestions of how to achieve it.
I have a bunch of async generators which I’d like to be able to merge into
a single async generator I can iterate over. I found Vincent’s aiostream
library which gives me this without too much effort:
from asyncio import sleep, run
from aiostream.stream import merge
async def go():
yield 0
await sleep(1)
yield 50
await sleep(1)
yield 100
async def main():
tasks = merge(go(), go(), go())
async for v in tasks:
print(v)
if __name__ == '__main__':
run(main())
However, I also would like to be able to add additional tasks into the list
once I’ve started iterating the list so something more akin to:
from asyncio import sleep, run
from aiostream.stream import merge
async def go():
yield 0
await sleep(1)
yield 50
await sleep(1)
yield 100
async def main():
tasks = merge(go(), go(), go())
async for v in tasks:
If v == 50:
tasks.merge(go())
print(v)
if __name__ == '__main__':
run(main())
Has anyone been able to achieve something like this?
p.s. I know appending to a list you’re iterating is bad practice, I assume
the same would be true modifying this stream object, but think the example
illustrates what I’m trying to achieve.
Thanks,
James
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