Python Set issubset() Method
Example
Return True if all items in set
x are present in set y:
x = {"a", "b", "c"}
y = {"f", "e", "d",
"c", "b", "a"}
z = x.issubset(y)
print(z)
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Definition and Usage
The issubset() method returns True if all items
in the set exists in the specified set, otherwise it returns False.
As a shortcut, you can use the <= operator instead, see example below.
Syntax
set.issubset(set1)
Shorter Syntax
set <= set1
Parameter Values
| Parameter | Description |
|---|---|
| set1 | Required. The set to search for equal items in |
More Examples
Example
Use <= as a shortcut instead of
issubset():
x = {"a", "b", "c"}
y = {"f", "e", "d",
"c", "b", "a"}
z = x <= y
print(z)
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Example
What if not all items are present in the specified set?
Return False if not all items in set
x are present in set y:
x = {"a", "b", "c"}
y = {"f", "e", "d",
"c", "b"}
z = x.issubset(y)
print(z)
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