YouTipPython Set intersection_update() Method | Tutorial
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Python3.x Python Set intersection_update() Method
Description
The intersection_update() method is used to find the elements that are common to two or more sets, i.e., to compute the intersection.
The intersection_update() method is different from the intersection() method because the intersection() method returns a new set, while the intersection_update() method removes the non-overlapping elements from the original set.
Syntax
Syntax of the intersection_update() method:
set.intersection_update(set1, set2 ... etc)Parameters
- set1 -- Required, the set to find common elements with.
- set2 -- Optional, other sets to find common elements with. Multiple sets can be provided, separated by commas (,).
Return Value
None.
Examples
Remove elements from set x that are not present in set y:
Example 1
x = {"apple", "banana", "cherry"} # y set does not contain banana and cherry, they are removed
y = {"google", "tutorial", "apple"}
x.intersection_update(y)
print(x)Output:
{'apple'}Compute the intersection of multiple sets:
Example 1
x = {"a", "b", "c"}
y = {"c", "d", "e"}
z = {"f", "g", "c"}
x.intersection_update(y, z)
print(x)Output:
{'c'}