docs/examples/storage/create_directory_backup_stream_to_cf.py

import subprocess
from datetime import datetime

from libcloud.storage.types import Provider, ContainerDoesNotExistError
from libcloud.storage.providers import get_driver

driver = get_driver(Provider.CLOUDFILES_US)('username', 'api key')

directory = '/home/some/path'
cmd = 'tar cvzpf - %s' % (directory)

object_name = 'backup-%s.tar.gz' % (datetime.now().strftime('%Y-%m-%d'))
container_name = 'backups'

# Create a container if it doesn't already exist
try:
    container = driver.get_container(container_name=container_name)
except ContainerDoesNotExistError:
    container = driver.create_container(container_name=container_name)

pipe = subprocess.Popen(cmd, bufsize=0, shell=True, stdout=subprocess.PIPE)
return_code = pipe.poll()

print 'Uploading object...'

while return_code is None:
    # Compress data in our directory and stream it directly to CF
    obj = container.upload_object_via_stream(iterator=pipe.stdout,
                                             object_name=object_name)
    return_code = pipe.poll()

print 'Upload complete, transferred: %s KB' % ((obj.size / 1024))