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How to check if a Set contains all the items of Another Set in Python


How to check if a Set contains all the items of Another Set in Python ?

Answer

To check if a set contains all the items of another set in Python, you can use the issubset method.



✐ Examples

1 Check if One Set is a Subset of Another Set

In this example,

  1. We create two sets named setA and setB containing some elements.
  2. We use the issubset method of setA to check if all elements of setB are also present in setA.
  3. The issubset method returns a boolean value: True if setA is a subset of setB, and False otherwise.
  4. We print the result to the console to verify whether setA is a subset of setB.

Python Program

setA = {1, 2, 3, 4, 5}
setB = {2, 3}
is_subset = setA.issubset(setB)
print(f'Is setA a subset of setB? {is_subset}')

Output

Is setA a subset of setB? False

2 Check if One Set is a Superset of Another Set

In this example,

  1. We create two sets named setA and setB containing some elements.
  2. We use the issuperset method of setA to check if all elements of setB are also present in setA.
  3. The issuperset method returns a boolean value: True if setA is a superset of setB, and False otherwise.
  4. We print the result to the console to verify whether setA is a superset of setB.

Python Program

setA = {1, 2, 3, 4, 5}
setB = {2, 3}
is_superset = setA.issuperset(setB)
print(f'Is setA a superset of setB? {is_superset}')

Output

Is setA a superset of setB? True

Summary

In this tutorial, we learned How to check if a Set contains all the items of Another Set in Python language with well detailed examples.




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