Python Dictionary Quiz: Take the MCQ Challenge

What separates all elements in a dictionary?

In a dictionary, are both keys and values unique?

What is an example of a dictionary?

In the dictionary D = {1 : “One”, 2 : “Two”, 3 : “Three”}, what do 1, 2, 3 represent?

What type of error is returned by the code when trying to access a non-existent key in a dictionary?

Which method in Python is used to delete an element from a dictionary?

In Python, can dictionaries contain duplicate values for keys?

What is the result of running d = {1: 'one', 2: 'two', 3: 'three'}; d.clear(); print(d)?

Which data type in Python is considered an unordered collection of items?

If you try to access a key that does not exist in a dictionary in Python, what error will you encounter?

Dictionary Elements

In a dictionary, all elements are separated by commas.
Each element is a key-value pair, separated by a colon.

Dictionary Uniqueness

In a dictionary, keys must be unique, but values can be duplicated.

Dictionary Example

A dictionary is a data type that stores a collection of key-value pairs, such as D = {1 : “One”, 2 : “Two”, 3 : “Three”}.

Dictionary Keys

In a dictionary, keys can be any immutable data type, such as integers, strings, or tuples.
In the example D = {1 : “One”, 2 : “Two”, 3 : “Three”}, the keys are 1, 2, and 3.

Accessing Non-Existent Keys

If you try to access a key that does not exist in a dictionary, a KeyError is raised.

Deleting Dictionary Elements

The del statement or the pop() method can be used to delete an element from a dictionary.

Duplicate Values

In a dictionary, duplicate values for keys are allowed, but each key must be unique.

Clearing a Dictionary

The clear() method is used to remove all elements from a dictionary, leaving it empty.
The result of running d = {1: 'one', 2: 'two', 3: 'three'}; d.clear(); print(d) is an empty dictionary {}.

Dictionary Data Type

A dictionary is an unordered collection of items in Python.

Accessing Non-Existent Keys Error

If you try to access a key that does not exist in a dictionary in Python, a KeyError is raised.

Test your knowledge on Python dictionaries with this multiple-choice quiz. Questions cover topics like keys, mutability, deletion of elements, and key repetition.