1.http://blog.csdn.net/jaster_wisdom/article/details/52825244
2.http://www.cnblogs.com/txw1958/archive/2012/03/12/2392067.html
3.python引用和拷贝
http://blog.csdn.net/huaweitman/article/details/9492615
http://blog.csdn.net/our2848884/article/details/70212052
4.python深拷贝和浅拷贝
http://onmyway-1985.iteye.com/blog/2111939
5.博主python学习记录：
http://blog.csdn.net/u012735879/article/category/2270107/2
http://blog.csdn.net/qiang12qiang12/article/category/6530042
http://blog.csdn.net/u012735879/article/category/2270107
