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.
later is Apache licensed, as found in the LICENSE file