python去掉字符串中重复字符的方法

复制代码 代码如下:If order does not matter, you can use “”.join(set(foo))set() will create a set of unique letters in the string, and “”.join() will join the letters back to a string in arbitrary order. If order does matter, you can use collections.OrderedDict in Python 2.7: from collections import OrderedD