>>> unicode('\x87\x6F', "shift jis")
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
UnicodeDecodeError: 'shift_jis' codec can't decode bytes in position 0-1: illegal multibyte sequence

Still, \x87\x6F is a valid Shift-JIS character : http://demo.icu-project.org/icu-bin/convexp?conv=ibm-943_P15A-2003&b=87&s=MIME#layout, it is "㎜"...

Thanks,

--
Nicolas Dumazet — NicDumZ
Deuxième année ENSIMAG.