interesting dict bug

[Sick Monkey]

Here is a segment of some code that I have.
CODE:
--------------
   print filename
   params2 =
{'filename':filename,'id3title':title,'id3artist':artist,'id3album':album,'id3year':year,'id3track':track,'id3genre':genre,'uname':username,'password':password,'filesToUpload':open(file,
'rb')}
   print params2
----------------
OUTPUT:
01.mp3
{'password': u'XXX', 'id3year': '2002', 'id3album': 'album, 'id3title':
'Lose Yourself', 'filename': u'01.mp3', 'uname': u'', 'id3genre':
'Soundtrack', 'id3artist': 'Eminem', 'filesToUpload': <open file
u'/Users/ozdon/Music/test2/01-eminemhhh.mp3', mode 'rb' at 0x106a5c0>,
'id3track': 'Unknown'}
--------------
Does anyone know how the random  " u' " is getting into the params2 or know
how to around this?

I am using Python 2.5 on MacOSX.
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