"""
add item(s) to a set
add()
update()
"""

my_set = {1,3}
print(my_set)

# add one item
my_set.add(2)
print(my_set)


# add more than one item
my_set = {1,3}

# list
my_set.update([4,5,6])
print(my_set)

# tuple
my_set.update((7,8,9))
print(my_set)

# set
my_set.update({10,11})
print(my_set)

# dict
my_set.update({12:'a',13:'b'})
print(my_set)

# mix
my_set.update(('a','b'),['c','d'])
print(my_set)