Python3将字节类型的Unicode码转换为文字

bytes.decode('unicode_escape')

>>> s1 = '\u6ce8\u6768'
>>> s1
'注杨'

>>> s2 = b'\\u6ce8\\uff1a'
>>> s2
b'\\u6ce8\\u6768'
>>> print(s2)
b'\\u6ce8\\u6768'
>>> s2.decode('utf-8')
'\\u6ce8\\u6768'
>>> s2.decode('unicode_escape')
'注杨'