Test your knowledge: Python Asynchronous Generators

Review

1. What makes an async def function an asynchronous generator function?

   The presence of yield inside async def defines an asynchronous generator function.
2. What happens when you call an asynchronous generator function?

   Calling the function creates an asynchronous generator object; execution proceeds when iteration requests a value.
3. Why can an asynchronous generator keep a running total across multiple yielded values?

   Suspension at yield preserves the generator frame, including its local bindings, for the next resume.
4. Which return form is allowed inside an asynchronous generator?

   An asynchronous generator may use an empty return to finish early, but returning a value is not allowed.
5. What happens when yield from is used inside an asynchronous generator function?

   yield from is a synchronous generator-delegation construct and is a syntax error in an asynchronous generator function.
6. An async for loop breaks after receiving one value from an asynchronous generator that has cleanup in finally. Which pattern guarantees that cleanup runs before execution continues after the block?

   aclosing() is an asynchronous context manager that awaits the generator's aclose() method when the block exits, including after an early break or an exception.