I accidently created the file __INIT__.PY in my 'krw' 
package directory (WinNT4).  Everything appeared to 
work as it should, except I was getting a very strange 
AttributeError:

Python 2.1 (#15, Apr 16 2001, 18:25:49) [MSC 32 bit 
(Intel)] on win32
Type "copyright", "credits" or "license" for more 
information.
>>> import printerTable
>>> l = printerTable.buildFromServer( 'chachaptr1')
>>> l = printerTable.buildFromServer( 'chachaptr1')
>>> l = printerTable.buildFromServer( 'chachaptr1')
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "printerTable.py", line 57, in buildFromServer
    host = krw.util.Host( hostAndPort[0])
AttributeError: '?' module has no attribute 'util'

At this point:

dir( printerTable.krw) => []

After 2 days trying to find out what was happening in 
the code, I decided to check out the package.  I ended 
up recreating the file as __init__.py and the problem 
went away.

I can rename the file back to __INIT__.PY and it 
produces the behavior mentioned above.