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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 delete_tag_for_component(user, c_id, tag_id):
 """Delete a tag on a specific component."""

    # Todo : check c_id and tag_id exist in db

    query = _TABLE_TAGS.delete().where(_TABLE_TAGS.c.tag_id == tag_id and
                                       _TABLE_TAGS.c.component_id == c_id)

    try:
        flask.g.db_conn.execute(query)
    except sa_exc.IntegrityError:
        raise dci_exc.DCICreationConflict(_TABLE_TAGS.c.tag_id, 'tag_id')

    return flask.Response(None, 204, content_type='application/json')