python2中的unicode_在python 3和2中工作的Unicode文字

So I have a python script that I'd prefer worked on python 3.2 and 2.7 just for convenience.

Is there a way to have unicode literals that work in both? E.g.

#coding: utf-8

whatever = 'שלום'

The above code would require a unicode string in python 2.x (u'') and in python 3.x that little u causes a syntax error.

解决方案

Edit - Since Python 3.3, the u'' literal works again, so the u() function isn't needed.

The best option is to make a method that creates unicode objects from string objects in Python 2, but leaves the string objects alone in Python 3 (as they are already unicode).

import sys

if sys.version < '3':

import codecs

def u(x):

return codecs.unicode_escape_decode(x)[0]

else:

def u(x):

return x

You would then use it like so:

>>> print(u('\u00dcnic\u00f6de'))

Ünicöde

>>> print(u('\xdcnic\N{Latin Small Letter O with diaeresis}de'))

Ünicöde

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