python去除删除数据中\u0000\u0001等unicode字符串的代码

#!/usr/bin/env python
# -*- coding:utf-8 -*-

 a = "system\u0000"
 b = re.sub(u'\u0000', "", a)
 
 print(b)   ## b="system"

#!/usr/bin/python 
#coding: utf-8

slashUStr = "\\u0063\\u0072\\u0069\\u0066\\u0061\\u006E\\u0020\\u5728\\u8DEF\\u4E0A";  #crifan 在路上 
decodedUniChars = slashUStr.decode("unicode-escape") 
print "decodedUniChars=",decodedUniChars;  #decodedUniChars= crifan 在路上