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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 register_user_type(self, keyspace, user_type, klass):
 """ Registers a class to use to represent a particular user-defined type. Query parameters for this user-defined type will be assumed to be instances of `klass`. Result sets for this user-defined type will be instances of `klass`. If no class is registered for a user-defined type, a namedtuple will be used for result sets, and non-prepared statements may not encode parameters for this type correctly. `keyspace` is the name of the keyspace that the UDT is defined in. `user_type` is the string name of the UDT to register the mapping for. `klass` should be a class with attributes whose names match the fields of the user-defined type. The constructor must accepts kwargs for each of the fields in the UDT. This method should only be called after the type has been created within Cassandra. Example:: cluster = Cluster(protocol_version=3) session = cluster.connect() session.set_keyspace('mykeyspace') session.execute("CREATE TYPE address (street text, zipcode int)") session.execute("CREATE TABLE users (id int PRIMARY KEY, location address)") # create a class to map to the "address" UDT class Address(object):
 def __init__(self, street, zipcode):
 self.street = street self.zipcode = zipcode cluster.register_user_type('mykeyspace', 'address', Address) # insert a row using an instance of Address session.execute("INSERT INTO users (id, location) VALUES (%s, %s)", (0, Address("123 Main St.", 78723))) # results will include Address instances results = session.execute("SELECT * FROM users") row = results[0] print row.id, row.location.street, row.location.zipcode """

        if self.protocol_version < 3:
            log.warning("User Type serialization is only supported in native protocol version 3+ (%d in use). "
                        "CQL encoding for simple statements will still work, but named tuples will "
                        "be returned when reading type %s.%s.", self.protocol_version, keyspace, user_type)

        self._user_types[keyspace][user_type] = klass
        for session in tuple(self.sessions):
            session.user_type_registered(keyspace, user_type, klass)
        UserType.evict_udt_class(keyspace, user_type)