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Python set operations (union, intersection, difference and symmetric difference)

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  • Difficulty Level : Basic
  • Last Updated : 18 Dec, 2017
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This article demonstrates different operations on Python sets.
Examples:

Input :
A = {0, 2, 4, 6, 8}
B = {1, 2, 3, 4, 5}

Output :
 Union : [0, 1, 2, 3, 4, 5, 6, 8]
 Intersection : [2, 4]
 Difference : [8, 0, 6]
 Symmetric difference : [0, 1, 3, 5, 6, 8]

In Python, below quick operands can be used for different operations.

| for union.
& for intersection.
– for difference
^ for symmetric difference




# Program to perform different set operations
# as we do in  mathematics
  
# sets are define
A = {0, 2, 4, 6, 8};
B = {1, 2, 3, 4, 5};
  
# union
print("Union :", A | B)
  
# intersection
print("Intersection :", A & B)
  
# difference
print("Difference :", A - B)
  
# symmetric difference
print("Symmetric difference :", A ^ B)

Output:

('Union :', set([0, 1, 2, 3, 4, 5, 6, 8]))
('Intersection :', set([2, 4]))
('Difference :', set([8, 0, 6]))
('Symmetric difference :', set([0, 1, 3, 5, 6, 8]))
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