def u2opener(self):
        """
        Create a urllib opener.

        @return: An opener.
        @rtype: I{OpenerDirector}

        """
        if self.urlopener is None:
            return urllib2.build_opener(*self.u2handlers())
        return self.urlopener
Create a urllib opener.

        @return: An opener.
        @rtype: I{OpenerDirector}