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"""Asynchronous examples using `asyncio`, `async` and `await`."""
import asyncio
from tqdm.asyncio import tqdm, trange
def count(start=0, step=1):
i = start
while True:
new_start = yield i
if new_start is None:
i += step
else:
i = new_start
async def main():
N = int(1e6)
async for row in tqdm(trange(N, desc="inner"), desc="outer"):
if row >= N:
break
with tqdm(count(), desc="coroutine", total=N + 2) as pbar:
async for row in pbar:
if row == N:
pbar.send(-10)
elif row < 0:
assert row == -9
break
# should be ~1sec rather than ~50s due to async scheduling
for i in tqdm.as_completed([asyncio.sleep(0.01 * i)
for i in range(100, 0, -1)], desc="as_completed"):
await i
if __name__ == "__main__":
asyncio.run(main())
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