'Create the authenticator. If you are in the initial stages of
the OAuth dance and don\'t yet have a token or token_secret,
pass empty strings for these params.'

def __init__(self, token, token_secret, consumer_key, consumer_secret):

    self.token = token
    self.token_secret = token_secret
    self.consumer_key = consumer_key
    self.consumer_secret = consumer_secret
    if ((token_secret is None) or (consumer_secret is None)):
        raise MissingCredentialsError('You    must    supply    strings    for    token_secret    and    consumer_secret,    not    None.')
