在您解码原始字符串的任何地方，它都可能是使用latin-1或近亲进行解码的.由于latin-1是Unicode的前256个代码点，因此可以:

Where ever you decoded the original string, it was likely decoded with latin-1 or a close relative. Since latin-1 is the first 256 codepoints of Unicode, this works:

>>> s = u'Gaga\xe2\x80\x99s'
>>> s.encode('latin-1').decode('utf8')
u'Gaga\u2019s'