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async-timeout ============= asyncio-compatible timeout context manager. Usage example ------------- The context manager is useful in cases when you want to apply timeout logic around block of code or in cases when ``asyncio.wait_for()`` is not suitable. Also it's much faster than ``asyncio.wait_for()`` because ``timeout`` doesn't create a new task. The ``timeout(timeout, *, loop=None)`` call returns a context manager that cancels a block on *timeout* expiring:: async with timeout(1.5): await inner() 1. If ``inner()`` is executed faster than in ``1.5`` seconds nothing happens. 2. Otherwise ``inner()`` is cancelled internally by sending ``asyncio.CancelledError`` into but ``asyncio.TimeoutError`` is raised outside of context manager scope. *timeout* parameter could be ``None`` for skipping timeout functionality. Context manager has ``.expired`` property for check if timeout happens exactly in context manager:: async with timeout(1.5) as cm: await inner() print(cm.expired) The property is ``True`` is ``inner()`` execution is cancelled by timeout context manager. If ``inner()`` call explicitly raises ``TimeoutError`` ``cm.expired`` is ``False``. Installation ------------ :: $ pip install async-timeout The library is Python 3 only! Authors and License ------------------- The module is written by Andrew Svetlov. It's *Apache 2* licensed and freely available.
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