Python Set intersectionupdate
Python Set x.intersection_update(y) method removes the elements from the set x that are not present in y. In other words, updates set x with the intersection of x and y.
In this tutorial, we will learn the syntax of set.intersection_update() method and go through examples covering different scenarios for the arguments that we pass to intersection_update() method.
Syntax
The syntax of set.intersection() is
set.intersection_update(other)
where
| Parameter | Description |
|---|---|
| other | A set. |
Examples
1 Intersection of sets x, y
In the following program, we will take two sets: x, y; and find the intersection of the sets, and update x with the resulting set.
Python Program
x = {'apple', 'banana', 'cherry'}
y = {'banana', 'mango', 'apple', 'guava'}
x.intersection_update(y)
print(x)
Program Output
{'banana', 'apple'}
2 Intersection with an empty set
In the following program, we will take two sets: x, y; and find the intersection of the sets. We take the set y an empty set. The result must be an empty set.
Python Program
x = {'apple', 'banana', 'cherry'}
y = set()
x.intersection_update(y)
print(x)
Program Output
set()
Conclusion
In this Python Tutorial, we learned about Python set method intersection_update(). We have gone through the syntax of intersection_update() method, and its usage with example programs.