Installing https://github.com/jubos/fake-s3 into a vm and export fake_s3_root on host's port 8080. See Vagrantfile
Install vagrant and virtualbox, see http://docs.vagrantup.com/v2/getting-started/index.html
vagrant up
See Python S3 examples on http://ceph.com/docs/master/radosgw/s3/python/ For the section "CREATING A CONNECTION" access_key and secret_key can be empty, remember to set host='localhost', port=8080 to connect to fakes3 on localhost:8080.