I'm using Windows 7, Python 3.3rc2-amd64. Near the end of the installation:
Traceback (most recent call last):
File "<string>", line 612, in <module>
File "<string>", line 322, in install
File "<string>", line 160, in LoadSystemModule
File "D:\dev\python33\lib\imp.py", line 158, in load_module
ValueError: file object required for import (type code 3)
This may actually be a Python bug. the import system has had issues with Python 3.3 specifically with "type code 3". See http://bugs.python.org/issue15828 which was recently fixed.