{"id":644,"date":"2020-10-18T08:49:21","date_gmt":"2020-10-18T08:49:21","guid":{"rendered":"https:\/\/www.pythontutorial.net\/?page_id=644"},"modified":"2025-03-27T03:06:12","modified_gmt":"2025-03-27T03:06:12","slug":"python-issuperset","status":"publish","type":"page","link":"https:\/\/www.pythontutorial.net\/python-basics\/python-issuperset\/","title":{"rendered":"Python issuperset"},"content":{"rendered":"\n

Summary<\/strong>: in this tutorial, you’ll learn how to use the Python issuperset()<\/code> method to check if a set<\/a> is a superset of another.<\/p>\n\n\n\n

Introduction to Python issuperset method #<\/a><\/h2>\n\n\n\n

Suppose that you have two sets: A and B. A is a superset of B if all elements of B are elements of A.<\/p>\n\n\n\n

If A is a superset of B, then B is a subset of A. To check if a set is a subset of another, you use the issubset()<\/a><\/code> method.<\/p>\n\n\n\n

If set A and set B are not equal, set A is a proper<\/strong> superset of set B. <\/p>\n\n\n\n

Logically, a set is a superset of itself.<\/p>\n\n\n\n

The following illustrates that set A is the superset of the set B because the elements 1, 2, 3 in the set B are also in set A:<\/p>\n\n\n

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\"Python<\/figure>\n<\/div>\n\n\n

In Python, you use the set issuperset()<\/code> method to check if a set is a superset of another set:<\/p>\n\n\n

set_a.issuperset(set_b)<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
The issuperset()<\/code> returns True<\/code> if the set_a<\/code> is a superset of the set_b<\/code>. Otherwise, it returns False<\/code>.<\/p>\n\n\n\n
Python issuperset() method examples #<\/a><\/h2>\n\n\n\n
The following example uses the issuperset()<\/code> to check if the numbers set is a superset of the scores set:<\/p>\n\n\n
numbers = {1<\/span>, 2<\/span>, 3<\/span>, 4<\/span>, 5<\/span>}\nscores = {1<\/span>, 2<\/span>, 3<\/span>}\n\nresult = numbers.issuperset(scores)\n\nprint(result)<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
True<\/span><\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
Since all elements of the scores<\/code> set are present in the numbers<\/code> set, the numbers<\/code> set is the superset of the scores<\/code> set.<\/p>\n\n\n\n
A set is also a superset of itself. For example:<\/p>\n\n\n
numbers = {1<\/span>, 2<\/span>, 3<\/span>, 4<\/span>, 5<\/span>}\nresult = numbers.issuperset(numbers)\n\nprint(result)<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
True<\/span><\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
The scores<\/code> set is not a subset of the numbers set therefore the following example returns False<\/code>:<\/p>\n\n\n
numbers = {1<\/span>, 2<\/span>, 3<\/span>, 4<\/span>, 5<\/span>}\nscores = {1<\/span>, 2<\/span>, 3<\/span>}\n\nresult = scores.issuperset(numbers)\n\nprint(result)<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
False<\/span><\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
Using superset operators #<\/a><\/h2>\n\n\n\n
The >= operator determines if a set is a superset of another set:<\/p>\n\n\n
set_a >= set_b<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
The >=<\/code> operator returns True<\/code> if the set_a<\/code> is a superset of the set_b<\/code>. Otherwise, it returns False<\/code>. For example:<\/p>\n\n\n
numbers = {1<\/span>, 2<\/span>, 3<\/span>, 4<\/span>, 5<\/span>}\nscores = {1<\/span>, 2<\/span>, 3<\/span>}\n\nresult = numbers >= scores\nprint(result)  # True<\/span>\n\nresult = numbers >= numbers\nprint(result)  # True<\/span><\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
True<\/span>\nTrue<\/span><\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
To check if a set is a proper<\/strong> superset of another set, you use the > operator:<\/p>\n\n\n
set_a > set_b<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
For example:<\/p>\n\n\n
numbers = {1<\/span>, 2<\/span>, 3<\/span>, 4<\/span>, 5<\/span>}\nscores = {1<\/span>, 2<\/span>, 3<\/span>}\n\nresult = numbers > scores\nprint(result)  # True<\/span>\n\nresult = numbers > numbers\nprint(result)  # True<\/span><\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
True<\/span>\nFalse<\/span><\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
In this example, the set numbers<\/code> is not a proper superset of itself, therefore, the ><\/code> operator returns False<\/code>.<\/p>\n\n\n\n
Summary #<\/a><\/h2>\n\n\n\n
Try it<\/a><\/p>\n\n\n\n
Try it<\/a><\/p>\n\n\n\n
Try it<\/a><\/p>\n\n\n\n
Try it<\/a><\/p>\n\n\n\n
Try it<\/a><\/p>\n\n\n\n