create a filtered indexer that doesn't have any missing indexers

def convert_from_missing_indexer_tuple(indexer, axes):
    """
    create a filtered indexer that doesn't have any missing indexers
    """

    def get_indexer(_i, _idx):
        return (axes[_i].get_loc(_idx['key']) if isinstance(_idx, dict) else
                _idx)

    return tuple(get_indexer(_i, _idx) for _i, _idx in enumerate(indexer))