python web 框架tornado-4.4.2 安装测试

下载tornado-4.4.2
cd tornado-4.4.2
python setup.py build
sudo python setup.py install
OK 编译安装完成 


运行一个hellwrold 试试 
import tornado.ioloop
import tornado.web


class MainHandler(tornado.web.RequestHandler):
    def get(self):
        self.write("Hello, world")


application = tornado.web.Application([
    (r"/", MainHandler),
])


if __name__ == "__main__":
    application.listen(8888)
    tornado.ioloop.IOLoop.instance().start()


python test.py 报错 内容如下


  File "test.py", line 3, in <module>
    import tornado.web
  File "/usr/local/lib/python2.7/dist-packages/tornado/web.py", line 84, in <module>
    from tornado import gen
  File "/usr/local/lib/python2.7/dist-packages/tornado/gen.py", line 98, in <module>
    from singledispatch import singledispatch  # backport
然后少一些包 安装吧：


sudo apt-get install python-pycurl
apt-get install python-pip
python -m pip install singledispatch backports_abc
然后在运行一次试试：
python test.py  又报错了……
root@ubuntu:/home/lfj/python# python test.py 
Traceback (most recent call last):
  File "test.py", line 3, in <module>
    import tornado.web
  File "/usr/local/lib/python2.7/dist-packages/tornado/web.py", line 86, in <module>
    from tornado import iostream
  File "/usr/local/lib/python2.7/dist-packages/tornado/iostream.py", line 40, in <module>
    from tornado.netutil import ssl_wrap_socket, ssl_match_hostname, SSLCertificateError, _client_ssl_defaults, _server_ssl_defaults
  File "/usr/local/lib/python2.7/dist-packages/tornado/netutil.py", line 39, in <module>
    import certifi
ImportError: No module named certifi
少certifi模块 继续安装


pip install certifi


再次运行 OK 

netstat -nlp 查看8888端口成功监听 

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