called with value under the 'QUERY_STRING' key of the self.META dictionary and append it to string '?', append the result th the self.path converted into a string and return it, if the value under the 'QUERY_STRING' key of the self.META dictionary is false, return self.path converted into a string. def the method get_signed_cookie with 5 arguments: self, key, default set to RAISE_ERROR, salt as an empty string,
def get_signed_cookie ( self , key , default = RAISE_ERROR , salt = '' , max_age = None ) :