Nathaniel has done a great job of drawing parallels between go and goto. I've been stung, time and again by asyncio.create_task() swallowing exceptions[1], and

Nathaniel has done a great job of drawing parallels between go and goto. I've been stung, time and again by asyncio.create_task() swallowing exceptions[1], and functions not telling callers about background tasks[2]. For others looking to NOT rewrite all their code using a 3rd party event loop, here's a simple reproduction of nursery's behaviour in raw asyncio - Hopefully, this will help lift the curse of asyncio :) [EDIT] A library is also available - https://github.com/Tygs/ayo https://github.com/Tygs/ayo (with amazing operator overload) async def main(): async with Nursery() as ny: ny.start_soon(a_1(), a_2(), ..., a_n()) ny.start_soon(b_1(), b_2(), ..., b_n()) . . . ny.start_soon(x_1(), x_2(), ..., x_n()) class Nursery: def __init__(self): self.tasks = set() def start_soon(self, *coros: typing.Coroutine): for coro in coros: self.tasks.add(asyncio.create_task(coro)) async def __aenter__(self): return self async def __aexit__(self, *args): try: while self.tasks: tasks = self.tasks self.tasks = set() done, pending = await asyncio.wait( tasks, return_when=asyncio.FIRST_COMPLETED ) try: for task in done: await task finally: self.tasks |= pending finally: for task in self.tasks: task.cancel() [1] https://stackoverflow.com/questions/60287285/starlette-asyncio-create-task-doesnt-log-error-if-task-object-is-stored-in https://stackoverflow.com/questions/60287285/starlette-async... [2] https://github.com/encode/starlette/issues/947 https://github.com/encode/starlette/issues/947