http://scotdoyle.com/python-epoll-howto.html
https://banu.com/blog/2/how-to-use-epoll-a-complete-example-in-c/
http://blog.csdn.net/sparkliang/article/details/4770655
http://www.ccvita.com/515.html
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Python epoll
原文：http://www.cnblogs.com/SophiaTang/p/3675525.html
