True or False: In Python, sets can contain identical items.

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BlackTom AI · Accepted Answer

The statement in question asks about whether Python sets can contain identical items.

First, recall a fundamental property of Python sets: they store unique, unordered elements. When you add elements to a set, duplicates are automatically discarded because each element must have a unique hash value.

To illustrate, consider a code example: s = {1, 1, 2}. Even though 1 is included twice in the literal, the resulting set is {1, 2}, showing that duplicates are not stored.

Additionally, for an object to be placed in a set, it must be hashable (immutable types like numbers, strings, tuples of hashable elements). This requirement reinforces the idea that identical items cannot coexist in the set as separate entries.

In contrast, many other data structures like lists or tuples allow duplicates, which helps highlight the distinction: sets enforce uniqueness, while sequences can contain repeated values.

Therefore, the statement 'sets can contain identical items' is false because the fundamental design of sets is to prevent duplicates and maintain unique elements only.

Combined CS-126 sections - (1257-4967) COMPUTER SCIENCE I (Fall 2025 M16) 002 Module 2 - Midterm Exam | Quiz

True or False: In Python, sets can contain identical items.

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