mac 下使用虚拟环境 安装没有提示出错，但是运行后有如下提示，怎么消除？
主要有二个， 1个是登陆那里 flask相关的，另外一个是wsgidav，我是采用pip3安装的，是不是这里的原因？
谢谢
(pyspidervenv) zhengweitekiMacBook-Air:spider zhengwei$ pyspider all
Web server running on port 25555
[I 160608 15:15:32 result_worker:49] result_worker starting...
[I 160608 15:15:32 scheduler:489] loading projects
[I 160608 15:15:32 processor:208] processor starting...
[I 160608 15:15:32 scheduler:424] in 5m: new:0,success:0,retry:0,failed:0
[I 160608 15:15:32 tornado_fetcher:509] fetcher starting...
/Users/zhengwei/spider/pyspidervenv/lib/python3.5/site-packages/flask/exthook.py:71: ExtDeprecationWarning: Importing flask.ext.login is deprecated, use flask_login instead.
.format(x=modname), ExtDeprecationWarning
[E 160608 15:15:32 app:61] WebDav interface not enabled: ImportError("No module named 'wsgidav'",)
[I 160608 15:15:32 app:76] webui running on 0.0.0.0:5000
不用管 warning
该死的 SF CDN 不让我回复