A couple days ago I posted some code for accessing LDAP using win32com and ADO in this thread:
Does Python 3 have LDAP module?
It's for Python 3, but can be used in 2 if you redo the print functions to be statements.
Also, as mentioned in the comments on that thread, check PyPI for a list of other LDAP modules:
http://pypi.python.org/pypi?%3Aaction=search&term=ldap&submit=search