def natsort(string):
return [int(s) if s.isdigit() else s for s in re.split('<STR_LIT>', string)]<EOL>
按照语言里的意义对字符串进行排序.

    这个方法用于替换按照字符编码顺序对字符串进行排序.
    相关链接:
    http://stackoverflow.com/questions/2545532/python-analog-of-natsort-function-sort-a-list-using-a-natural-order-algorithm
    http://www.codinghorror.com/blog/2007/12/sorting-for-humans-natural-sort-order.html