[FIXED] How to await a coroutine until a condition is met?

Issue

I'm new to asynchronous programming in Python and I'm trying to program an example coroutine that awaits until an arbitrary condition is met. Is this a proper way to implement it?

async def foo():
    print('foo')   # this is executed before we start checking the condition
    while not condition:
        await asyncio.sleep(1)
    print('bar')   # this is executed after the condition is met

Solution

As @L3viathan mentioned, asyncio.Event can be used to achive it.

Here's little example:

import asyncio


async def foo(event):
    while True:
        print('foo')
        await event.wait()
        print('bar')


async def main():
    event = asyncio.Event()

    asyncio.create_task(foo(event))

    for i in range(5):
        await asyncio.sleep(i)
        event.set()
        event.clear()


asyncio.run(main())

Answered By - Mikhail Gerasimov