Quick animate

#Quick animate
from pymel.core import *
"""
sj = scriptJob(e= "SelectionChanged", ct)
for s in sj:
    print s
"""
def selector():
    sl = selected()
    print "_______"
    print sl

def startS():
    global sj
    sj = scriptJob(e= ("SelectionChanged",selector))
    print "Start"
def stopS():
    scriptJob(k=sj)
    print "Stop"




from pymel.core import *
win = window(title= "Gui", s=0)
mainLayout = rowColumnLayout(nc=1)

startBtn = button(l="Start", command=Callback(startS),w=100)
stopBtn = button(l="Stop", command=Callback(stopS))


win.show()