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Python set() function with Examples

Python set() function with Examples on append(), clear(), extend(), insert(), pop(), remove(), index(), count(), pop(), reverse(), sort(), copy(), all(), bool(), enumerate(), iter(), map(), min(), max(), sum() etc.

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Python set() Function

In python, a set is a built-in class, and this function is a constructor of this class. It is used to create a new set using elements passed during the call. It takes iterable as an argument and returns a new set object. The constructor syntax is given below.

Signature

set([iterable])

Parameters

iterable: a collection of immutable elements.

Return

It returns a new set.

Let's see some examples of set() function to understand it's functionality.

Python set() Function Example 1

A simple example to create a set of using iterable elements.

# Python set() function example
# Calling function
result = set() # empty set
result2 = set('12')
result3 = set('TheDeveloperBlog')
# Displaying result
print(result)
print(result2)
print(result3)

Output:

set()
{'1', '2'}
{'a', 'n', 'v', 't', 'j', 'p', 'i', 'o'}

Python set() Function Example 2

# Python set() function example
# Calling function
result = set(['12','13','15'])
result2 = set(('j','a','v','a','t','p','o','i','n','t'))
result3 = set({1:'One',2:'Two',3:'Three'})
# Displaying result
print(result)
print(result2)
print(result3)

Output:

{'15', '13', '12'}
{'n', 'v', 'a', 'j', 'p', 't', 'o', 'i'}
{1, 2, 3}

Python set() Function Example 3

Here, we are creating a set of filtered elements. The geteven function returns even values.

# Python set() function example
def geteven(data):
    if data%2 == 0:
        return data
    
evenval = filter(geteven,[2,5,6,9,8,4])
# Calling function
result = set(evenval)
# Displaying result
print(result)

Output:

{8, 2, 4, 6}

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