# Introduction Python Set Add() Method with Examples

The set add() method adds a given element to a set. If the element is already present, it doesn't add any element.

Python set add() is an inbuilt function that is used to add an element to any set. The set add() method adds a given item to a set if the element is not present in the set. If the element is already present in that set, it does not add that element because, as we know, the set does not contain any duplicate value in it.

Python set add()

The syntax of set add() method is:

``````set.add(element)

``````

Here, an element is the value that is to be added to the set.

### Parameters

The add(0 method takes a single parameter:

• elem - the element that is added to the set

### Return Value

The set() method does not return any value or anything. It just adds the given value if it is not present in that set.

Set add() method Example

### Example 1: Add an element to a set

``````
# set of vowels
vowels = {'a', 'e', 'i', 'u'}

# adding 'o'
vowels.add('o')
print('Vowels are:', vowels)

# adding 'a' again
vowels.add('a')
print('Vowels are:', vowels)

``````

Output:

``````Vowels are: {'a', 'i', 'o', 'u', 'e'}
Vowels are: {'a', 'i', 'o', 'u', 'e'}

``````

Note: Order of the vowels can be different.

### Example 2: Add tuple to a set

``````
# set of vowels
vowels = {'a', 'e', 'u'}

# a tuple ('i', 'o')
tup = ('i', 'o')

# adding tuple
vowels.add(tup)
print('Vowels are:', vowels)

# adding same tuple again
vowels.add(tup)
print('Vowels are:', vowels)

``````

Output:

``````
Vowels are: {('i', 'o'), 'e', 'u', 'a'}
Vowels are: {('i', 'o'), 'e', 'u', 'a'}

``````

You can also add tuples to a set. And like normal elements, you can add the same tuple only once.

Thanks for reading !

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