http://www.pythondoc.com/pythontutorial27/index.html
http://www.liaoxuefeng.com/wiki/001374738125095c955c1e6d8bb493182103fac9270762a000/00138681965108490cb4c13182e472f8d87830f13be6e88000
official documents：http://docs.python.org/3/tutorial/index.html
this book(http://www.diveintopython3.net/).
http://andylin02.iteye.com/blog/845355 ---getopt
http://wangwei007.blog.51cto.com/68019/1104940 ---os.path
http://blog.csdn.net/werm520/article/details/6898473 ---read, readline, readlines
eclipse + pydev + win7 64-bit
http://www.cnblogs.com/sevenyuan/archive/2009/12/10/1620939.html
http://blog.csdn.net/st780206/article/details/5317181 python嵌入C语言脚本
http://www.cnblogs.com/huxi/archive/2010/07/04/1771073.html python正则表达式指南
http://blog.csdn.net/sasoritattoo/article/details/12451359 python代码`if not x:` 和`if x is not None:`和`if not x is None:`使用