Hrvoje Nikšić <[email protected]> added the comment:
Another option occurred to me: as_completed could return an object that
implements both synchronous and asynchronous iteration protocol:
class as_completed:
def __init__(fs, *, loop=None, timeout=None):
self.__fs = fs
self.__loop = loop
self.__timeout = timeout
def __iter__(self):
# current implementation here
...
async def __aiter__(self):
# new async implementation here
...
def __next__(self):
# defined for backward compatibility with code that expects
# as_completed() to return an iterator rather than an iterable
if self._iter is None:
self._iter = iter(self)
return next(self._iter)
With that design there wouldn't need to be a new function under a different
name; instead, as_completed could just be documented as an asynchronous
iterable, with the old synchronous iteration supported for backward
compatibility.
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Python tracker <[email protected]>
<https://bugs.python.org/issue33533>
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