Python全栈开发：协程代码实例

协程代码1

#!/usr/bin/env python
# -*- coding;utf-8 -*-
# 导入协程模块
"""
    协程工作原理
"""
import greenlet
from greenlet import greenlet

def text1():
    print(12)
    gr2.switch()
    print(56)
    gr2.switch()

def text2():
    print(34)
    gr1.switch()
    print(78)

gr1 = greenlet(text1)
gr2 = greenlet(text2)

gr1.switch()

协程代码2

#!/usr/bin/env python
# -*- coding;utf-8 -*-
"""
    使用协程模块gevent自动切换线程，注意调入模块的方式：
        from gevent import monkey;monkey.patch_all()
"""
import time
from gevent import monkey;monkey.patch_all()
import gevent
import requests

def f(url):
    print("Get: %s" % url)
    ret = requests.get(url)
    date = ret.text
    print(len(date))

links = []
with open("G:/python/urls.txt", "r") as url:
    for i in url:
        links.append(gevent.spawn(f, i))

gevent.joinall(links)