python asyncio 子线程中的EventLoop

# coding: utf-8
# @Time    : 2022-05-17 9:12
# @Author  : AngDH
import asyncio
import threading
import time

now = lambda: time.time()


async def task_func():
    print("task_func:", threading.current_thread().name)
    print("task_func start")
    await asyncio.sleep(3)
    print("task_func done")


def start_loop(loop):
    asyncio.set_event_loop(loop)
    loop.run_forever()


def callback(t):
    print("callback:", threading.current_thread().name)
    time.sleep(1)
    print("callback done")


start = now()
# 这里不能用 get_event_loop , 它会与当前线程绑定
new_loop = asyncio.new_event_loop()
# 子线程启动 事件循环
t = threading.Thread(target=start_loop, args=(new_loop,))
t.start()

asyncio.run_coroutine_threadsafe(task_func(), new_loop)

new_loop.call_soon(callback, 1)
# new_loop.call_soon_threadsafe(callback, 2)

print("主线程:do other")