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

Question

BlackTom AI · Accepted Answer

Consider the claim: 'In Python, sets can contain identical items.'

First, recall what a set is: a collection that stores unique, unordered elements. The core property of a set is that it cannot have duplicates.

When you add an element to a set, Python uses hashing and equality to determine if an equivalent element is already present. If a value equal to an existing member is added, it is not stored again; the set remains with a single instance of that value.

Therefore, the statement is false because a set cannot contain two identical items at the same time. If you attempt to add duplicates (for example, 1 twice), the set will still show only one 1.

A helpful nuance: for some types, you can have distinct objects that are not equal, and both can be in a set if they are not considered equal by Python’s equality and hashing rules. Conversely, for items that are equal (or hash to the same value), only one representative is kept.

Also note a related constraint: elements placed in a set must be hashable. Mutable types like lists cannot be elements of a set at all, which further limits what can be stored but does not alter the uniqueness principle for hashable items.

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.

查看解析

登录即可查看完整答案

类似问题

Consider the following code segment: primes = {2, 3, 5, 7} odds = {1, 3, 5, 7} x = primes.issubset(odds) What value will be stored in x after it has executed?

What is in the set fruit after the following code snippet? fruit2 = set(["blueberry", "lemon", "grapes"]) fruit3 = set(["apple", "banana", "pears", "kiwi"]) fruit = fruit2.union(fruit3)

Which of the following is a possible output after the following code snippet is executed? names = set(["Jane", "Joe", "Amy", "Lisa"]) names.add("Amber") names.add("Zoe") names.discard("Joe") print(names)

Which method can be used to add a group of elements to a set?

The issubset() method can be used to determine whether set1 is a subset of set2.

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

Consider the following code: result = {'A rabbit', 'The Scourge of Caerbannog', 'The most cruel and bad tempered rodent'} result.remove('The most cruel and bad tempered rodent') result.remove('The Scourge of Caerbannog') result.add(42) What value is stored in result?

Consider the following code: result = {'A rabbit', 'The Scourge of Caerbannog', 'The most cruel and bad tempered rodent'} result.remove('The most cruel and bad tempered rodent') result.remove('The Scourge of Caerbannog') result.add(42) What value is stored in result?

更多留学生实用工具

考试浏览器助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单