In Python Sets, we can add items to a set using the add() method or the update() method.
Using add()
The add() method adds a single element to the set.
my_set = {1, 2, 3} my_set.add(4) print(my_set) # {1, 2, 3, 4}
Using update()
The update() method can add multiple elements to the set. You can pass any iterable (list, tuple, set, etc.) to update().
my_set = {1, 2, 3} my_set.update([4, 5, 6]) print(my_set) # {1, 2, 3, 4, 5, 6}
You can also use update() with other iterables like strings, tuples, or even other sets.
Example with a string -
my_set = {1, 2, 3} my_set.update("abc") print(my_set) # {1, 2, 3, 'a', 'b', 'c'}
Example with a tuple -
my_set = {1, 2, 3} my_set.update((4, 5)) print(my_set) # {1, 2, 3, 4, 5}
Example with another set -
my_set = {1, 2, 3} my_set.update({4, 5, 6}) print(my_set) # {1, 2, 3, 4, 5, 6}
These methods allow us to dynamically add elements to a set, maintaining its property of containing only unique elements.