协程 Gevent

# 协程应用：爬虫
from gevent import monkey;monkey.patch_all()
import gevent
import requests
import time

def get_page(url):
    print('GET: %s' %url)
    response=requests.get(url)
    if response.status_code == 200:
        print('%d bytes received from %s' %(len(response.text),url))

start_time=time.time()
gevent.joinall([
    gevent.spawn(get_page,'https://www.python.org/'),
    gevent.spawn(get_page,'https://www.yahoo.com/'),
    gevent.spawn(get_page,'https://github.com/'),
])
stop_time=time.time()
print('run time is %s' %(stop_time-start_time))

#服务端
from gevent import monkey;monkey.patch_all()
from socket import *
import gevent

#如果不想用money.patch_all()打补丁,可以用gevent自带的socket
# from gevent import socket
# s=socket.socket()

def server(server_ip,port):
    s=socket(AF_INET,SOCK_STREAM)
    s.setsockopt(SOL_SOCKET,SO_REUSEADDR,1)
    s.bind((server_ip,port))
    s.listen(5)
    while True:
        conn,addr=s.accept()
        gevent.spawn(talk,conn,addr)

def talk(conn,addr):
    try:
        while True:
            res=conn.recv(1024)
            print('client %s:%s msg: %s' %(addr[0],addr[1],res))
            conn.send(res.upper())
    except Exception as e:
        print(e)
    finally:
        conn.close()

if __name__ == '__main__':
    server('127.0.0.1',8080)

#客户端
#_*_coding:utf-8_*_
__author__ = 'Linhaifeng'

from socket import *

client=socket(AF_INET,SOCK_STREAM)
client.connect(('127.0.0.1',8080))

while True:
    msg=input('>>: ').strip()
    if not msg:continue

    client.send(msg.encode('utf-8'))
    msg=client.recv(1024)
    print(msg.decode('utf-8'))