Python add()

The add() function in python helps to insert specified elements into the set. This method does not allow to the addition of duplicate elements. 

set.add(element) #where element which is to be add
 

 add() Parameters:

The add() function takes a single parameter. This function doesn't add the element if the specified element already exists in the set.

add() Return Value
 

The add() method doesn't return any value, it just updates the set by adding a particular element. We can add tuples also using this add() method. Like elements, the same tuples can't be added again.

Examples of add() method in Python

# alphabet set
alphabet = {'a', 'b', 'd', 'e', 'f'}

# adding 'c'
alphabet.add('c')
print('Alphabets are:', alphabet)

# adding 'b' again
alphabet.add('b')
print('Alphabets:', alphabet)
 

Output:

Alphabets are:{'a', 'b', 'd', 'e', 'c', 'f'}
Alphabets are:{'a', 'b', 'd', 'e', 'c', 'f'}
# The order may be different

# alphabet set
alphabet = {'a', 'b', 'c'}

# a tuple ('d', 'e')
tuple = ('d', 'e')

# adding tuple
alphabet.add(tuple)
print('Alphabets are:', alphabet)

# adding same tuple again
alphabet.add(tuple)
print('Alphabets are:', alphabet)
 

Output:

Alphabets are: {('d', 'e'), 'c', 'b', 'a'}
Alphabets are: {('d', 'e'), 'c', 'b', 'a'}