Quoting sql queries with the DB-API

From: snacktime (snacktime_at_gmail.com)
Date: 01/24/05

Date: Sun, 23 Jan 2005 16:00:48 -0800
To: python-list@python.org

I'm used to using the perl DBI and not very familiar with the python
DB-API. I am using PyGreSQL. My question is what is the standard way
to quote strings in sql queries? I didn't see any quoting functions
in the DB-API docs. Is quoting handled internally by the PyGreSQL

Also, is this a good way to use variables in an insert/update
statement, or is there a better way?

sql = "insert into test(a,b) values('%s','%s')" % (a,b)