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 OrderedDict
foo = \”mppmt\”
print \”\”.join(OrderedDict.fromkeys(foo))
printing

mpt