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Course Overview
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(‘javatpoint’)
# 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 dataevenval = 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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