#unlike set.remove(), If the target element does not exist, set.discard method does not raise a KeyError, it returns None instead.
myset = {1, 3, 4, 5, 7, 8, 9}
#remove elements
myset.discard(4)
myset.discard(8)
print(myset)
#unlike set.remove(), If the target element does not exist, set.discard method does not raise a KeyError, it returns None instead.
myset = {1, 3, 4, 5, 7, 8, 9}
#remove elements
myset.discard(4)
myset.discard(8)
print(myset)