Quick Check: Python Asynchronous Context Managers

Review

1. Which pair of methods does async with use for entering and leaving an asynchronous context?

   An asynchronous context manager supplies __aenter__() and __aexit__(); async with awaits those methods.
2. What happens to the value returned by __aenter__() before an async with as target is assigned?

   async with awaits __aenter__(), and the resulting value is assigned to the as target.
3. After a successful asynchronous context entry, what happens to __aexit__() if the block raises?

   async with awaits __aexit__() on exceptional exit and supplies the exception type, value, and traceback.
4. When can an asynchronous context manager suppress an exception from its block?

   As with synchronous context managers, a true __aexit__() result suppresses the exception.
5. Where can Python use an async with statement?

   Python requires async with to appear inside a coroutine function; otherwise it is a SyntaxError.