[web2py] Python 2.5 and python 2.7 conflict within web2py?

[weheh]

I've been running python 2.5 with web2py forever. Now, for good
reason, I am trying to upgrade to python 2.7. However, when invoking
web2py thus:

"c:/Program Files (x86)/Python27/python.exe" web2py.py -a password -i
127.0.0.1 -p 8000

I get a traceback:

Traceback (most recent call last):
  File "web2py.py", line 20, in <module>
    import gluon.widget
  File "N:\web2py\gluon\widget.py", line 19, in <module>
    import socket
  File "c:\Program Files (x86)\Python27\lib\socket.py", line 47, in
<module>
    import _socket
ImportError: Module use of python25.dll conflicts with this version of
Python.


Can someone suggest how to get past this issue? Thanks.