# set
# no duplicate values,
# set can contain any values ex string or nos
set={1,2,3,4,5,6,7,8,9}
print(set)

# set its not contain list and tuples
# add function

set.add('f')
print(set)
# remove()
# discard()

# remove and discard() difference
set.remove(9)
print(set)
print('..................')
set.discard(5)
print(set)
