asyncio-addon

Some convenient utilities for asyncio.

Utilities include:

• @async_main: A decorator to run an async function as the main entry point.
• run_sync: Run a coroutine in sync, even if the async event loop is running.
• run_async: An alias of asyncio.to_thread. Run a sync function in a separate thread.
• SemGroup: A task group with a semaphore, allowing limited concurrency.
• gather_all: Enhanced version of asyncio.gather with concurrency control, better API and cancel-safety.

(Almost) everything natively include timeout control.

Why do we need another gather_all?

As the doc says:

A new alternative to create and run tasks concurrently and wait for their completion is asyncio.TaskGroup. TaskGroup provides stronger safety guarantees than gather for scheduling a nesting of subtasks: if a task (or a subtask, a task scheduled by a task) raises an exception, TaskGroup will, while gather will not, cancel the remaining scheduled tasks.