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Copy pathuse_AsyncIO.py
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55 lines (39 loc) · 1.06 KB
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#!/bin/env python3
# coding=utf-8
# -*- coding：utf-8 -*-
# 同步IO模型
# do_some_code()
#f = open('/path/to/file', 'r')
#r = f.read() # <== 线程停在此处等待IO操作结果
# IO操作完成后线程才能继续执行:
# do_some_code(r)
# 异步IO模型
# 消息模型，“读消息--处理消息”
#loop = get_event_loop()
#while True:
# event = loop.get_event()
# process_event(event)
import asyncio
@asyncio.coroutine # 标记 为coroutine类型
def hello():
print("Hello world!")
# 异步调用asyncio.sleep(1):
r = yield from asyncio.sleep(1)
print("Hello again!")
# 获取EventLoop:
loop = asyncio.get_event_loop()
# 执行coroutine
loop.run_until_complete(hello())
loop.close()
# another example
import threading
import asyncio
@asyncio.coroutine
def hello():
print('Hello world! (%s)' % threading.currentThread())
yield from asyncio.sleep(1)
print('Hello again! (%s)' % threading.currentThread())
loop = asyncio.get_event_loop()
tasks = [hello(), hello()]
loop.run_until_complete(asyncio.wait(tasks))
loop.close()