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- try:
- from inspect import iscoroutine
- except ImportError:
- def iscoroutine(obj): # type: ignore
- return False
- try:
- from asyncio import Future, ensure_future # type: ignore
- except ImportError:
- class Future: # type: ignore
- def __init__(self):
- raise Exception("You need asyncio for using Futures")
- def set_result(self):
- raise Exception("You need asyncio for using Futures")
- def set_exception(self):
- raise Exception("You need asyncio for using Futures")
- def ensure_future(): # type: ignore
- raise Exception("ensure_future needs asyncio for executing")
- try:
- from .iterate_promise import iterate_promise
- except (SyntaxError, ImportError):
- def iterate_promise(promise): # type: ignore
- raise Exception('You need "yield from" syntax for iterate in a Promise.')
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