wsgi自带,用语构建简单服务器

• 例子

from wsgiref.simple_server import make_serverdef index(env, res):res('200 ok', [('Content-Type', 'text/html')])print(env['PATH_INFO'][1:])  # method = env['REQUEST_METHOD']body =  '<h1>hello %s </h1>' % (env['PATH_INFO'][1:] or 'index')return [body.encode('utf8')]# 创建服务器
server = make_server('127.0.0.1', 3000, index)
print('Server start at 3000...')# 监听请求
server.serve_forever()

aiohttp基于asyncio实现的HTTP框架

import asyncio
from aiohttp import web@asyncio.coroutine
def index(request):yield from asyncio.sleep(0.5)text = '<h1>hello, %s!</h1>' % (request.match_info['name'] or 'index')return web.Response(body=text.encode('utf8'))@asyncio.coroutine
def init(loop):app = web.Application(loop=loop)app.router.add_route('GET', '/{name}', index)# 创建服务器srv = yield from loop.create_server(app.make_handler(), '127.0.0.1', 3000)print('Server started at http://127.0.0.1:3000...')return srv# 获取EventLoop:
loop = asyncio.get_event_loop()
# 执行coroutine
loop.run_until_complete(init(loop))
# 监听请求
loop.run_forever()

jinja2

• 简单的模版初始化和使用

from jinja2 import Environment, FileSystemLoaderdef init_jinja2():path = os.path.abspath('.')env = Environment(loader=FileSystemLoader(path))return env__template__ = init_jinja2()
....
body = __template__.get_template('example.html').render(**kw).encode('utf-8')
....

aiomysql 为asyncio提供异步mmysql IO的驱动

import asyncio
import aiomysqlloop = None@asyncio.coroutine
def connect():global loop# 建立连接conn = yield from aiomysql.connect(host= '127.0.0.1',port= 3306,user= 'root',password= 'password',db= 'awesome',loop= loop)# 打开游标cur = yield from conn.cursor()# 执行SQL语句yield from cur.execute('SELECT * FROM users')print(cur.description)# 获取结果集r = yield from cur.fetchall()print(r)yield from cur.close()conn.close()loop = asyncio.get_event_loop()
loop.run_until_complete(connect())