Python psycopg2 timeout

When using the keyword arguments syntax to the connect function it is possible to use any of the libpd supported connection parameters. Among those there is connect_timeout in seconds:

db = psycopg2.connect (
    host=dhost, database=ddatabase,
    user=duser, password=dpassword,
    connect_timeout=3
)

http://www.postgresql.org/docs/current/static/libpq-connect.html#LIBPQ-PARAMKEYWORDS

http://initd.org/psycopg/docs/module.html

A connection time out raises an OperationalError exception.