def set_proxy(proxy, user=None, password=""):
"""
Set the HTTP proxy for Python to download through.
If ``proxy`` is None then tries to set proxy from environment or system
settings.
:param proxy: The HTTP proxy server to use. For example:
'http://proxy.example.com:3128/'
:param user: The username to authenticate with. Use None to disable
authentication.
:param password: The password to authenticate with.
"""
from nltk import compat
if proxy is None:
# Try and find the system proxy settings
try:
proxy = getproxies()["http"]
except KeyError:
raise ValueError("Could not detect default proxy settings")
# Set up the proxy handler
proxy_handler = ProxyHandler({"http": proxy})
opener = build_opener(proxy_handler)
if user is not None:
# Set up basic proxy authentication if provided
password_manager = HTTPPasswordMgrWithDefaultRealm()
password_manager.add_password(realm=None, uri=proxy, user=user, passwd=password)
opener.add_handler(ProxyBasicAuthHandler(password_manager))
opener.add_handler(ProxyDigestAuthHandler(password_manager))
# Overide the existing url opener
install_opener(opener)
def set_proxy(proxy, user=None, password=''):
"""
Set the HTTP proxy for Python to download through.
If ``proxy`` is None then tries to set proxy from environment or system
settings.
:param proxy: The HTTP proxy server to use. For example:
'http://proxy.example.com:3128/'
:param user: The username to authenticate with. Use None to disable
authentication.
:param password: The password to authenticate with.
"""
from nltk import compat
if proxy is None:
# Try and find the system proxy settings
try:
proxy = getproxies()['http']
except KeyError:
raise ValueError('Could not detect default proxy settings')
# Set up the proxy handler
proxy_handler = ProxyHandler({'http': proxy})
opener = build_opener(proxy_handler)
if user is not None:
# Set up basic proxy authentication if provided
password_manager = HTTPPasswordMgrWithDefaultRealm()
password_manager.add_password(realm=None,
uri=proxy,
user=user,
passwd=password)
opener.add_handler(ProxyBasicAuthHandler(password_manager))
opener.add_handler(ProxyDigestAuthHandler(password_manager))
# Overide the existing url opener
install_opener(opener)