Python Set intersection() Method
Example
Return a set that contains the items that exist in both set
x, and set y:
x =
{"apple", "banana", "cherry"}
y = {"google", "microsoft", "apple"}
z = x.intersection(y)
print(z)
Try it Yourself »
y = {"google", "microsoft", "apple"}
z = x.intersection(y)
print(z)
Definition and Usage
The intersection() method returns a set that
contains the similarity between two or more sets.
Meaning: The returned set contains only items that exist in both sets, or in all sets if the comparison is done with more than two sets.
As a shortcut, you can use the & operator instead, see example below.
Syntax
set.intersection(set1, set2 ... etc.)
Parameter Values
| Parameter | Description |
|---|---|
| set1 | Required. The set to search for equal items in |
| set2 | Optional. The other set to search for equal items in. You can compare as many sets you like. Separate the sets with a comma |
Shorter Syntax
set & set1 & set2 ... etc.
Parameter Values
| Parameter | Description |
|---|---|
| set1 | Required. The set to search for equal items in |
| set2 | Optional. The other set to search for equal items in. You can compare as many sets you like. Separate the sets with &
(a and operator).See examples below. |
More Examples
Example
Use & as a shortcut instead of
intersection():
x =
{"apple", "banana", "cherry"}
y = {"google", "microsoft", "apple"}
z = x & y
print(z)
Try it Yourself »
y = {"google", "microsoft", "apple"}
z = x & y
print(z)
Example
Join 3 sets, and return a set with items that is present in all 3 sets:
x =
{"a", "b", "c"}
y = {"c", "d", "e"}
z = {"f", "g", "c"}
result = x.intersection(y, z)
print(result)
Try it Yourself »
y = {"c", "d", "e"}
z = {"f", "g", "c"}
result = x.intersection(y, z)
print(result)
Example
Join 3 sets with the & operator:
x =
{"a", "b", "c"}
y = {"c", "d", "e"}
z = {"f", "g", "c"}
result = x & y & z
print(result)
Try it Yourself »
y = {"c", "d", "e"}
z = {"f", "g", "c"}
result = x & y & z
print(result)
Related Pages
Tutorial: Python Sets
Tutorial: Join Python Sets
Method: intersection_update()