The difference_update() updates the set calling difference_update() method with the difference of sets.
If A and B are two sets. The set difference of A and B is a set of elements that exists only in set A but not in B.
To learn more, visit Python set difference.
The syntax of difference_update() is:
A.difference_update(B)
Here, A and B are two sets. difference_update()
updates set A with the set difference of A-B
.
1. Return Value from difference_update()
difference_update()
returns None
indicating the object (set) is mutated.
Suppose,
result = A.difference_update(B)
When you run the code,
- result will be
None
- A will be equal to A-B
- B will be unchanged
2. Example: How difference_update() works?
A = {'a', 'c', 'g', 'd'} B = {'c', 'f', 'g'} result = A.difference_update(B) print('A = ', A) print('B = ', B) print('result = ', result)
Output
A = {'d', 'a'} B = {'c', 'g', 'f'} result = None
Related posts:
Python Machine Learning Third Edition - Sebastian Raschka & Vahid Mirjalili
Deep Learning with Python - Francois Cholletf
Python Program to Display Powers of 2 Using Anonymous Function
Python Directory and Files Management
Python Program to Check if a Number is Positive, Negative or 0
Python Program to Differentiate Between type() and isinstance()
Python Program to Add Two Numbers
Python Program to Find the Largest Among Three Numbers
Python Dictionary values()
Python print()
Python Program to Find Armstrong Number in an Interval
Python Program to Sort a Dictionary by Value
Python Set symmetric_difference()
Python super()
Convert a Map to an Array, List or Set in Java
Python Dictionary items()
Python Program to Check Armstrong Number
Python String split()
Python Program to Count the Number of Occurrence of a Character in String
Python next()
How to Get Started With Python?
Python Multiple Inheritance
Python dir()
Python Program to Find Hash of File
Python isinstance()
Python String casefold()
Python Set union()
Python Set pop()
Java Program to Implement the Binary Counting Method to Generate Subsets of a Set
Python Program to Find the Factorial of a Number
Python Program to Get a Substring of a String
Python Set intersection()