3.0rc3: List of 'os.', 'os.path.' attribute redundencies ... !! ?

[bMotu]

IDLE 3.0rc3  (using XP)
 import os

 os.altsep
'/'
 os.path.altsep
'/'

 os.curdir
'.'
 os.path.curdir
'.'

 os.defpath
'.;C:\\bin'
 os.path.defpath
'.;C:\\bin'

 os.devnull
'nul'
 os.path.devnull
'nul'

 os.pardir
'..'
 os.path.pardir
'..'

 os.pathsep
';'
 os.path.pathsep
';'

 os.sep
'\\'
 os.path.sep
'\\'

these - me thinks - should go away:
   os.altsep
   os.path.curdir
   os.path.defpath
   os.pathsep
   os.sep

these I do not understand:
 os.devnull
'nul'
 os.path.devnull   # should probably go away
'nul'

 os.pardir
'..'
 os.path.pardir   # should probably go away
'..'

ciao, motu
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3.0rc3: 'os.extsep' gone ... ?

[bMotu]

IDLE 2.6
 import os
 os.extsep
'.'
running XP this result is fine ... !

IDLE 3.0rc3
 import os
 os.extsep
Traceback (most recent call last):
  File pyshell#1, line 1, in module
os.extsep
AttributeError: 'module' object has no attribute 'extsep'

why is this attribute gone in 3.0rc3 ?

where is this documented ?

ciao, motu
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