Python编程：trio模块异步/等待本地I/O库

github: https://github.com/python-trio/trio
文档： https://trio.readthedocs.io/en/latest/tutorial.html

An async/await-native I/O library for humans and snake people

安装

pip install trio

  

 

  
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代码示例

# -*- coding: utf-8 -*-

import trio
import time

# 计时器
def timer(func): def inner(*args): start = time.time() ret = func(*args) end = time.time() print("{} time: {}".format(func.__name__, end - start)) return ret return inner


############## 同步执行 ######################
def sync_add(x, y): time.sleep(2) print("sync_add: {}".format(x + y))


def sync_multiply(x, y): time.sleep(2) print("sync_multiply: {}".format(x * y))


@timer
def sync_func(): sync_add(1, 1) sync_multiply(1, 1)


sync_func()


############## 异步执行 ######################
async def async_add(x, y): await trio.sleep(2) print("async_add: {}".format(x + y))


async def async_multiply(x, y): await trio.sleep(2) print("async_multiply: {}".format(x * y))


async def async_func(): async with trio.open_nursery() as nursery: nursery.start_soon(async_add, 1, 1) nursery.start_soon(async_multiply, 1, 1)


@timer
def run_async(): trio.run(async_func)


run_async()


  

 

  
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执行结果

sync_add: 2
sync_multiply: 1
sync_func time: 4.00608491897583

async_multiply: 1
async_add: 2
run_async time: 2.0082740783691406

  

 

  
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参考
异步爬虫写起来太麻烦？来试试 Trio 吧！

文章来源: pengshiyu.blog.csdn.net，作者：彭世瑜，版权归原作者所有，如需转载，请联系作者。

原文链接：pengshiyu.blog.csdn.net/article/details/88992809