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...anext__ method returning an awaitable object, which uses StopIteration exception to "yield" values, and StopAsyncIteration exception to signal the end of the iteration. Asynchronous generators define both of these methods. Let's manually iterate over a simple asynchronous generator: async def genfunc(): yield 1 yield 2 gen = genfunc() assert gen.__aiter__() is gen assert await gen.__anext__() == 1 assert await gen.__anext__() == 2 await gen.__anext__() # This line will raise Stop...