Table of Contents
The intersection_update() updates the set calling intersection_update() method with the intersection of sets.
The intersection of two or more sets is the set of elements which are common to all sets.
To learn more, visit Python set Intersection.
The syntax of intersection_update() is:
A.intersection_update(*other_sets)
1. intersection_update() Parameters
The intersection_update() method allows an arbitrary number of arguments (sets).
Note: * is not a part of the syntax. It is used to indicate that the method allows an arbitrary number of arguments.
2. Return Value from Intersection_update()
This method returns None (meaning it does not have a return value). It only updates the set calling the intersection_update() method.
For example:
result = A.intersection_update(B, C)
When you run the code,
- result will be
None - A will be equal to the intersection of A, B, and C
- B remains unchanged
- C remains unchanged
3. Example 1: How intersection_update() Works?
A = {1, 2, 3, 4}
B = {2, 3, 4, 5}
result = A.intersection_update(B)
print('result =', result)
print('A =', A)
print('B =', B)
Output
result = None
A = {2, 3, 4}
B = {2, 3, 4, 5}
4. Example 2: intersection_update() with Two Parameters
A = {1, 2, 3, 4}
B = {2, 3, 4, 5, 6}
C = {4, 5, 6, 9, 10}
result = C.intersection_update(B, A)
print('result =', result)
print('C =', C)
print('B =', B)
print('A =', A)
Output
result = None
C = {4}
B = {2, 3, 4, 5, 6}
A = {1, 2, 3, 4}
Related posts:
Python id()
Python Generators
Python String capitalize()
Python Decorators
Python Program to Convert Kilometers to Miles
Python Program to Find the Size (Resolution) of a Image
Python Functions
Python __import__()
Python filter()
Python compile()
Python float()
Python Program to Get the Class Name of an Instance
Python Program to Print Hello world!
Python Statement, Indentation and Comments
Python while Loop
Python List clear()
Python Operators
Python Set add()
Python Program to Reverse a Number
Python Program to Convert Two Lists Into a Dictionary
Python Program to Check If a List is Empty
Python input()
Python round()
Converting Between an Array and a Set in Java
Python Program to Find Factorial of Number Using Recursion
Python Errors and Built-in Exceptions
Python Machine Learning Third Edition - Sebastian Raschka & Vahid Mirjalili
Python type()
Python Program to Get the File Name From the File Path
Python Dictionary
Python callable()
Python Machine Learning - Sebastian Raschka
