Summary: in this tutorial, youll learn about how to use the Python issubset[] method to check if a set is a subset of another set.
Introduction to the Python issubset[] method
Suppose that you have two sets A and B. The set A is a subset of the set B if all elements of A are also elements of B. Then, the set B is a superset of the set A.
The following Venn diagram illustrates that the set A is a subset of the set B:
The set A and set B can be equal. If the set A and set B are not equal, A is a proper subset of B.
In Python, you can use the Set issubset[] method to check if a set is a subset of another:
If the set_a is a subset of the set_b, the issubset[] method returns True. Otherwise, it returns False.
The following example uses the issubset[] method to check if the set_a is a subset of the set_b:
Output:
By definition, a set is also a subset of itself. The following example returns True:
Output:
The following example returns True because some elements in the numbers set arent in the scores set. In other words, the numbers set is not a subset of the scores set:
Output:
Using subset operators
Besides using the issubset[] method, you can use subset operators [