Value error:invalid literal about alfodoo HOT 5 CLOSED

import wrapt
@wrapt.patch_function_wrapper('httplib2', '_parse_www_authenticate')
def wrapper(wrapped, instance, args, kwargs):
    headers = kwargs.get('headers') or args[0]
    headername = kwargs.get('headername') or  args[1]
    if headername == 'www-authenticate' and headers.has_key(headername):
        authenticate = headers[headername].strip()
        if len(authenticate.split(" ")) < 2:
            # A BUG into alfresco generates non RFC compliant
            # 'www-authenticate' header
            # https://issues.alfresco.com/jira/browse/MNT-15819
            # work around this bug and but force Basic auth into the supported
            # authentication
            authenticate = authenticate + ' , Basic realm=""'
            headers[headername] = authenticate
            return wrapped(headers, headername)
    return wrapped(*args, **kwargs)