Wie konvertiere ich meinebytearray('b\x9e\x18K\x9a') zu so etwas ->\x9e\x18K\x9a <--- nur str, nicht array!

<code>>> uidar = bytearray()
>> uidar.append(tag.nti.nai.uid[0])
>> uidar.append(tag.nti.nai.uid[1])
>> uidar.append(tag.nti.nai.uid[2])
>> uidar.append(tag.nti.nai.uid[3])
>> uidar
   bytearray('b\x9e\x18K\x9a')
</code>

Ich versuche mein Bytearray zu entschlüsseln

<code>uid  =  uidar.decode('utf-8')
</code>

aber es kann nicht ...

<code>Traceback (most recent call last):
  File "<pyshell#42>", line 1, in <module>
    uid = uidar.decode("utf-8")
  File "/usr/lib/python2.7/encodings/utf_8.py", line 16, in decode
    return codecs.utf_8_decode(input, errors, True)
UnicodeDecodeError: 'utf8' codec can't decode byte 0x9e in position 0: invalid start byte
</code>

Hilf mir bitte ...