letter count python

alp, occ, v, text =list('abcdefghijklmnopqrstuvwxyz'), [],0, "The quick brown Fox jumps over the lazy Dog"
for x in alp:
    for y in list(text.lower()):
        if x == y: v+=1
    occ.append(v)
    v=0
    print str(occ[alp.index(x)]).replace('0', 'No') + ' ' + x + "'s "