Trying to import from a module using dotted import syntax produces 
this exception:

ValueError: Relative importpath too deep

This behavior has been confirmed on Mac OS X 10.4 using the Python 
2.5b1 disk image; and on CentOS 4 using the Python 2.5b1 source 
tarball.

The exception is raised regardless of whether the PYTHONPATH 
environment variable can see the toplevel directory of the package 
being tested; regardless of whether the import is performed from an 
interactive Python session or from a script invoked from the command 
line; and regardless of whether the main script starts with

from __future__ import absolute_import

To test, I tried to re-create the package structure used as an example 
in PEP 328.  (See attachments.)

Most of the files were empty, except moduleX.py and moduleY.py:

#moduleX.py:
from __future__ import absolute_import

from .moduleY import spam

#moduleY.py:
spam = "spam"

According to the PEP, if should be possible to import moduleX without 
error.  But I get the above exception whenever I try to import moduleX 
or to run it from the command line.

$ python2.5 moduleX.py 
Traceback (most recent call last):
  File "moduleX.py", line 3, in <module>
    from .moduleY import spam
ValueError: Relative importpath too deep


Is this a usage/documentation error?