gistfile1.py

>>> app = conn.create_security_group('appserver', 'The application tier')
>>> app.authorize(src_group=web)
True
>>> web.authorize(ip_protocol='tcp', from_port=22, to_port=22, \      
                  cidr_ip='192.168.1.130/32')
True
>>> web.rules
[IPPermissions:tcp(80-80),
 IPPermissions:tcp(22-22)]
>>> web.revoke('tcp', 22, 22, cidr_ip='192.168.1.130/32')
True
>>> web.rules
[IPPermissions:tcp(80-80)]
>>>