搭建一个服务器，创建三个路由
    flask1.py

    1. from flask import  Flask
    2. import time
    3. app=Flask(__name__)
    5. @app.route('/bobo')
    6. def index_bobo():
    7.     time.sleep(2)
    8.     return 'Hello bobo'
    11. @app.route('/jay')
    12. def index_jay():
    13.     time.sleep(2)
    14.     return 'Hello jay'
    17. @app.route('/tom')
    18. def index_tom():
    19.     time.sleep(2)
    20.     return 'Hello tom'
    22. if __name__=='__main__':
    23.     app.run(threaded=True)
    1.  * Serving Flask app "flask1" (lazy loading)
    2.  * Environment: production
    3.    WARNING: Do not use the development server in a production environment.
    4.    Use a production WSGI server instead.
    5.  * Debug mode: off
    6.  * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
    1. import asyncio
    2. import time
    3. import requests
    4. stat=time.time()
    5. urls=[
    6.     'http://127.0.0.1:5000/bobo',
    7.     'http://127.0.0.1:5000/jay',
    8.     'http://127.0.0.1:5000/tom'
    9. ]
    11. async def get_page(url):
    12.     print('正在下载',url)
    13.     #requests.get是基于同步，
    14.     # 必须使用基于异步的网络请求模块进行指定url的请求发送
    15.     #aiohttp：基于异步网络请求的模块
    16.     response=requests.get(url=url)
    17.     print('下载完毕',response.text)
    19. tasks=[]
    20. for url in urls:
    21.     c=get_page(url)
    22.     task=asyncio.ensure_future(c)
    23.     tasks.append(task)
    25. loop=asyncio.get_event_loop()
    26. loop.run_until_complete(asyncio.wait(tasks))
    27. end=time.time()
    29. print('总耗时',end-stat)
    1. 正在下载 http://127.0.0.1:5000/bobo
    2. 下载完毕 Hello bobo
    3. 正在下载 http://127.0.0.1:5000/jay
    4. 下载完毕 Hello jay
    5. 正在下载 http://127.0.0.1:5000/tom
    6. 下载完毕 Hello tom
    7. 总耗时 6.043761253356934