Python 3.3.0
getdefaultencoding: utf-8
getfilesystemencoding: mbcs
getpreferredencoding(False): cp1252
getpreferredencoding(True): cp1252
----- os.listdir(b'.')
4
[b'English name', b'test.py', b'tests.py', b'??????? ???']
----- os.listdir(u'.')
4
Traceback (most recent call last):
  File "tests.py", line 20, in <module>
    print(res)
  File "C:\Python33\lib\encodings\cp437.py", line 19, in encode
    return codecs.charmap_encode(input,self.errors,encoding_map)[0]
UnicodeEncodeError: 'charmap' codec can't encode characters in position 41-47: character maps to <undefined>
----- os.stat(b'...........')
Traceback (most recent call last):
  File "tests.py", line 25, in <module>
    print("----- os.stat(b'\u0420\u0443\u0441\u0441\u043a\u043e\u0435 \u0438\u043c\u044f') ")
  File "C:\Python33\lib\encodings\cp437.py", line 19, in encode
    return codecs.charmap_encode(input,self.errors,encoding_map)[0]
UnicodeEncodeError: 'charmap' codec can't encode characters in position 16-22: character maps to <undefined>
-----
----- os.stat(u'...........')
Traceback (most recent call last):
  File "tests.py", line 37, in <module>
    print("----- os.stat(u'\u0420\u0443\u0441\u0441\u043a\u043e\u0435 \u0438\u043c\u044f') ")
  File "C:\Python33\lib\encodings\cp437.py", line 19, in encode
    return codecs.charmap_encode(input,self.errors,encoding_map)[0]
UnicodeEncodeError: 'charmap' codec can't encode characters in position 16-22: character maps to <undefined>
-----
nt.stat_result(st_mode=16895, st_ino=2251799813811657, st_dev=0, st_nlink=1, st_uid=0, st_gid=0, st_size=0, st_atime=1355309608 st_mtime=1355309608, st_ctime=1355309608)