garnaat

In [1]: policy = """{
   ...:   "Statement":[{
   ...:     "Effect":"Allow",
   ...:     "Action":["s3:*"],
   ...:     "Resource":["arn:aws:s3:::mybucket"]}]}"""
In [2]: import boto
In [4]: c = boto.connect_iam()
In [5]: instance_profile = c.create_instance_profile('myinstanceprofile')
In [6]: role = c.create_role('myrole')
In [7]: c.add_role_to_instance_profile('myinstanceprofile', 'myrole')