from maya import cmds , OpenMaya

center = "center"
vtx = cmds.ls(sl = 1 , fl = 1)

for v in vtx :
    cmds.select(cl =1 )
    jnt = cmds.joint()
    pos = cmds.xform(v , q =1 , ws =1 , t =1 )
    cmds.xform(jnt , ws =1 , t = pos )
    posC = cmds.xform(center , q =1 , ws =1 , t =1 )
    cmds.select(cl =1 )
    jntC = cmds.joint()
    cmds.xform(jntC , ws =1 , t = posC )
    cmds.parent(jnt , jntC)
    #joint -e  -oj xyz -secondaryAxisOrient yup -ch -zso;
    cmds.joint (jntC ,e= 1 , oj = "xyz" , secondaryAxisOrient= "yup", ch = 1 , zso =1 )