A feature of dictionaries is that a key can appear multiple times in the same dictionary.

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BlackTom AI · Accepted Answer

Consider the statement: 'A feature of dictionaries is that a key can appear multiple times in the same dictionary.'
Option 1 (True): This is incorrect because in Python dictionaries, keys must be unique. If a key is repeated in a dictionary literal, the last occurrence overwrites any previous ones, so you do not end up with multiple identical keys in a single dictionary.
Option 2 (False): This is the accurate characterization. The dictionary data model enforces unique keys; duplicates are not allowed, and the semantics involve overwriting the previous value associated with a key when a duplicate is encountered during initialization or assignment.
To illustrate, if you write a dictionary literal like { 'a': 1, 'a': 2 }, the resulting dictionary stores {'a': 2}, since the second 'a' entry overwrites the first. This behavior highlights that having the same key more than once in the same dictionary is not supported as a multiple-entry feature, but rather results in a single key with the most recent value.

BZAN2021.05|.06 Fall 2025 Coding for Business [Karpovsky] Reading Quiz: Dictionaries

A feature of dictionaries is that a key can appear multiple times in the same dictionary.

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