sys.path ordering question

[Kerim Borchaev]

Could someone explain the paths ordering logic used to create  sys.path
listed below?
Why win32 extensions are before standard python paths but  Numeric and other
after?
(I know this ordering makes sense - it's how modules are searched.
And in fact I'm asking this to get guidelines how should I arrange my own
packages.)

>>> import sys
>>> import pprint
>>> pprint.pprint(sys.path)
['',
 'C:\\Python21\\Pythonwin',
 'C:\\Python21\\win32',
 'C:\\Python21\\win32\\Lib',
 'C:\\Python21',
 'C:\\Python21\\DLLs',
 'C:\\Python21\\lib',
 'C:\\Python21\\lib\\plat-win',
 'C:\\Python21\\lib\\lib-tk',
 'C:\\Python21\\Numeric',
 'C:\\Python21\\PIL',
 'C:\\Python21\\PPM']

Thanks in advance...

Ragards,
Kerim.