How to convert a “raw” string into a normal string?

问题

In Python, I have a string like this:

'\\x89\\n'

How can I decode it into a normal string like:

'\x89\n'

回答1:

Python 2 byte strings can be decoded with the 'string_escape' codec:

raw_string.decode('string_escape')

Demo:

>>> '\\x89\\n'.decode('string_escape')
'\x89\n'

For unicode literals, use 'unicode_escape'. In Python 3, where strings are unicode strings by default, only byte strings have a .decode() method:

raw_byte_string.decode('unicode_escape')

If your input string is already a unicode string, use codecs.decode() to convert:

import codecs

codecs.decode(raw_unicode_string, 'unicode_escape')

Demo:

>>> b'\\x89\\n'.decode('unicode_escape')
'\x89\n'
>>> import codecs
>>> codecs.decode('\\x89\\n', 'unicode_escape')
'\x89\n'

回答2:

This would work for Python 3:

b'\\x89\\n'.decode('unicode_escape')

来源：https://stackoverflow.com/questions/24242433/how-to-convert-a-raw-string-into-a-normal-string