无法添加单个x，y顶点

Question

我试图通过vertXY方程运行各个顶点，但是无法让它正确运行，有什么建议吗？

close()

这是我的错误消息：

for row in arcpy.da.SearchCursor(input_shp, ["OID@", "SHAPE@"]):
    print("Feature {}:".format(row[0]))
    partnum = 0
    for part in row[1]:
        print("Part {}:".format(partnum))
        for pnt in part:
            if pnt:
                verticeX = ("{}".format(pnt.X))
                verticeY = ("{}".format(pnt.Y))
                print verticeX, verticeY
            else:
                print("Interior Ring:")
                for vert in pnt:
                    if vert:
                        vertXY = (verticeX*verticeY+1)-(verticeX+1*verticeY)
                        print VertXY
        partnum += 1

print 'step 1c'