===== later

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What is later?

later is a play on Async not happening now but at some point in the future. It was also an awesome name for a toolkit for writing AsyncIO applications. The batteries if you will for AsyncIO.

later is a collection of asyncio batteries created at Meta for supporting asyncio services.

later offers the following: - Unittesting - later.unittest.TestCase - An IsolatedAsyncioTestCase that insures tasks are not left orphaned and asyncio never calls its error handler. - later.unittest.mock.AsyncContextManager - A factory for easy mocking out AsyncContextManager - Tasks* - later.cancel - The correct way to cancel a Task/Future and insure it is awaited - later.as_task - Decorator to turn coroutines into Tasks. - later.Watcher - Watch tasks and ensure they don't die - take action when they do. This is kinda like a asyncio.TaskGroup - later.herd - A Decorator that provides coroutines with basic thundering herd protection. - later.task.TaskSentinel - A Completed Future, a default value for a asyncio.Task argument so you don't also have to accept None. - Synchronization - later.event.BiDirectionalEvent - two way asyncio.Event for Handshake style synchronization.

License

later is Apache licensed, as found in the LICENSE file <https://github.com/facebookincubator/later/blob/master/LICENSE>_