[Zope] using database connection inside of python scripts or how to do a d-hoc queries

I have been searching for this answer and not finding it. Inside a python script I want to create insert queries based on the fields returned from a form. I tried creating a database connection object like : dbcon = context.Psycopg_database_connection() Then executing a query like: RS = dbcon.query('select * from customer').dictionaries() this does not work. Can any one point me in the right direction? Thanks Gene