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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def uuid(self, name=None, pad_length=22):
 """ Generate and return a UUID. If the name parameter is provided, set the namespace to the provided name and generate a UUID. """

        # If no name is given, generate a random UUID.
        if name is None:
            uuid = _uu.uuid4()
        elif "http" not in name.lower():
            uuid = _uu.uuid5(_uu.NAMESPACE_DNS, name)
        else:
            uuid = _uu.uuid5(_uu.NAMESPACE_URL, name)
        return self.encode(uuid, pad_length)