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How to add elements to a set in Python?

In Python, you can add elements to a set using the add() method or the update() method. Here's how you can add elements to a set:

  1. Using the add() method:
my_set = {1, 2, 3}
my_set.add(4)
print(my_set)  # Output: {1, 2, 3, 4}

In this example, the add() method is used to add the element 4 to the set my_set. If the element already exists in the set, it will not be added again.

  1. Using the update() method:
my_set = {1, 2, 3}
my_set.update([3, 4, 5])
print(my_set)  # Output: {1, 2, 3, 4, 5}

The update() method can be used to add multiple elements to a set. It takes an iterable (such as a list, tuple, or set) as an argument and adds all the elements from the iterable to the set. Duplicate elements are automatically removed.

It's important to note that sets are mutable, so you can add elements to an existing set directly using these methods. Sets automatically handle duplicate elements by ensuring that each element appears only once.

Here's an example demonstrating the addition of elements to a set:

my_set = {1, 2, 3}
my_set.add(4)
print(my_set)  # Output: {1, 2, 3, 4}

my_set.update([3, 4, 5])
print(my_set)  # Output: {1, 2, 3, 4, 5}

This example shows how to add elements to a set using the add() and update() methods. You can choose the method that suits your needs based on whether you want to add a single element or multiple elements at once.

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