Elegant Python-code Miscellaneous: Adding u before the string

Sometimes the string we accept from other places goes through a difficult journey, and it changes. For example, you receive '\ u6253 \ u602a \ u8005' instead of U' \ u6253 \ u602a \ u8005 '. Obviously, you only need to add a U, but how to add it?> S = '\ u6253 \ u602a \ u8005'> s' \ u6253 \ u602a \ u8005 '> 'U' + s' U \ u6253 \ u602a \ \ u8005. And the surface looks like '\ u6253 \ u602a \ u8005'. In fact, it is' \ u6253 \ u602a \ u8005 'internally, which means two slashes are escaped, what I want is \ U instead of \ U. If you prefer black magic, you may think of eval.> Eval ('U "'+ S +'" ') U' \ u6253 \ u602a \ u8005'> Print eval ('U "'+ S + '"') you can use eval. However, this is too painful. Python comes with a solution. Yes Unicode-escape.> Unicode (S, 'unicode-escape ') U' \ u6253 \ u602a \ u8005' In addition, there is a name that is the same as Unicode-escape, called String-escape. The function can be said to be "Remove the Escape Character and change two backslash to one ". See the example.> S = 'Hello \ nworld'> s' Hello \ nworld'> S. Decode ('string-escape ') 'Hello \ nworld'