Retry for Synchronous Generator

[heri16]

Could we support retry for Synchronous Generator?

import random
from tenacity import retry

@retry
def ticker(to):
    """Yield numbers from 0 to `to`."""
    for i in range(to):
        if random.randint(0, 10) > 1:
            raise IOError("Broken sauce, everything is hosed!!!111one")
        else:
            yield i

for i in ticker(10):
    print(i)

[RonnyPfannschmidt]

retry for generators breaks flow expectations, how would it correctly know what to do after say failure after the 5th item

[heri16]

Good point. Generators uses exceptions internally. we would need to clone the generator first (itertools.tee) and then catch anything other than the StopIteration or GeneratorExit exception.

[RonnyPfannschmidt]

and that would have unexpected cost and side-effects as well

[untulis]

Would you accept a documentation PR to clarify this?