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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 _create_handler(self, config):
 """ Creates a handler from its config. Params: config: handler config Returns: handler instance """

        if config is None:
            raise ValueError('No handler config to create handler from.')

        if 'name' not in config:
            raise ValueError('Handler name is required.')

        handler_name = config['name']
        # try to create handler
        module_name = handler_name.rsplit('.', 1)[0]
        class_name = handler_name.rsplit('.', 1)[-1]
        module = import_module(module_name)
        handler_class = getattr(module, class_name)
        instance = handler_class(**config)

        return instance