def unrepr(s):
    if not s:
        return s
    if sys.version_info < (3, 0):
        b = _Builder2()
    else:
        b = _Builder3()
    obj = b.astnode(s)
    return b.build(obj)
Return a range tuple (string, string) for the given output name.  
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/cherrypy/cherrypy/lib/reprconf.py/unrepr--crossover with--dataset/ETHPy150Open andrew-gardner/dependsworkflow/depends/depends_node.py/DagNode.outputRange