a={1,2,"3:4",4,5,6,4}
a.add("sri")
a.update({3:11})
a.pop()
a.pop()
print(type(a))
print(a)
a.remove("sri")
print(a)
YT17MSwyLCIzOjQiLDQsNSw2LDR9CmEuYWRkKCJzcmkiKQphLnVwZGF0ZSh7MzoxMX0pCmEucG9wKCkKYS5wb3AoKQpwcmludCh0eXBlKGEpKQpwcmludChhKQphLnJlbW92ZSgic3JpIikKcHJpbnQoYSk=
<type 'set'>
set([3, 4, 5, 6, 'sri', '3:4'])
set([3, 4, 5, 6, '3:4'])