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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 show_namespace(name, **kwargs):
    '''
    Return information for a given namespace defined by the specified name

    CLI Examples::

        salt '*' kubernetes.show_namespace kube-system
    '''
    cfg = _setup_conn(**kwargs)
    try:
        api_instance = kubernetes.client.CoreV1Api()
        api_response = api_instance.read_namespace(name)

        return api_response.to_dict()
    except (ApiException, HTTPError) as exc:
        if isinstance(exc, ApiException) and exc.status == 404:
            return None
        else:
            log.exception(
                'Exception when calling '
                'CoreV1Api->read_namespace'
            )
            raise CommandExecutionError(exc)
    finally:
        _cleanup(**cfg)