docs/examples/http_proxy/set_http_proxy_method.py

from pprint import pprint

from libcloud.compute.types import Provider
from libcloud.compute.providers import get_driver

PROXY_URL_NO_AUTH_1 = 'http://<proxy hostname 1>:<proxy port 2>'
PROXY_URL_NO_AUTH_2 = 'http://<proxy hostname 1>:<proxy port 2>'
PROXY_URL_BASIC_AUTH = 'http://<user>:<pass>@<proxy hostname>:<proxy port>'

cls = get_driver(Provider.RACKSPACE)
driver = cls('username', 'api key', region='ord')

# Use proxy 1 for this request
driver.connection.set_http_proxy(proxy_url=PROXY_URL_NO_AUTH_1)
pprint(driver.list_nodes())

# Use proxy 2 for this request
driver.connection.set_http_proxy(proxy_url=PROXY_URL_NO_AUTH_2)
pprint(driver.list_nodes())