Join two Sets in Python (Union, Intersection, Difference, Symmetric) - Python Tutorial for Beginners
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🖥️ How to Join two Sets in Python? (Union, Intersection, Difference, Symmetric)
Sets are commonly used for Computing Mathematical Operations in Python, such as intersection, union, difference, and symmetric difference. Consequently, there are multiple ways to join two sets in Python.
○ Union of two Sets in Python
Union of the sets A and B is the set of all items in either A or B. You can use the method union(), that returns a new set containing all items from both sets, or the method update(), that inserts all the items from one set into another set. You can perform union on 2 sets using the method union() in Python, or "|" operator.
A = {'red', 'green', 'blue'}
B = {'yellow', 'red', 'orange'}
A.update(B)
my_new_set = (A | B)
my_new_set = A.union(B)
my_new_set = {'blue', 'green', 'yellow', 'orange', 'red'}
There are other methods that joins two sets and keeps ONLY the duplicates or, on the opposite, NEVER keeps the duplicates...
○ Intersection of two Sets in Python
Intersection of the sets A and B is the set of items common to both A and B. And you can perform intersection on two sets using the method intersection() in Python, or "&" operator.
A = {'red', 'green', 'blue'}
B = {'yellow', 'red', 'orange'}
my_new_set = (A & B)
my_new_set = A.intersection(B)
my_new_set = {'red'}
○ Difference of two Sets in Python
Set Difference of A and B is the set of all items that are in A but not in B. You can compute the difference between two sets using the method difference(), or "-" operator.
A = {'red', 'green', 'blue'}
B = {'yellow', 'red', 'orange'}
my_new_set = (A - B)
my_new_set = A.difference(B)
my_new_set = {'blue', 'green'}
○ Symmetric Difference of two Sets in Python
Symmetric difference of sets A and B is the set of all elements in either A or B, but not both. You can compute symmetric difference between two sets using symmetric_difference() in Python, or "^" operator.
A = {'red', 'green', 'blue'}
B = {'yellow', 'red', 'orange'}
my_new_set = (A ^ B)
my_new_set = A.symmetric_difference(B)
my_new_set = {'orange', 'blue', 'green', 'yellow'}
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