to express unicode string

[contro opinion]

>>> s='你好'
>>> t=u'你好'
>>> s
'\xc4\xe3\xba\xc3'
>>> t
u'\u4f60\u597d'
>>> t=us
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'us' is not defined
>>>
how can i use us to express  u'你好'??
can i add someting in  us  to  express   u'你好'??
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