python for循环赋值问题

class road():
    def __init__(self,gid,objectid,name,width,direction,speed,type,snode,enode,length,startX,startY,endX,endY):
        self.gid= gid
        self.objectid = objectid
        self.name = name
        self.width = width
        self.direction = direction
        self.speed = speed
        self.type = type
        self.snode = snode
        self.enode = enode
        self.length =  length
        self.startX = startX
        self.startY = startY
        self.endX = endX
        self.endY = endY

        objList = []
        for r in roadObjList:
            objList.append(r.objectid)

objList = [r.objectid for r in roadObjList]

 for i,ele in enumerate(roadPointObjList):
    print(i)
    print(ele)

for i in range(0, len(roadPointObjList)):
    print(i)
    print(roadPointObjList[i])