Accessing Dictionary Values

Let's build a dictionary to represent a book in a library:


              12
            
book = {"title": "Pride and Prejudice", "author": "Jane Austen", "year": 1813}
print(book)

This dictionary includes three key-value pairs:

In a dictionary, you can retrieve an item by referencing its key. Here's an example of accessing the publication year of the book:


              1234
            
book = {"title": "Pride and Prejudice", "author": "Jane Austen", "year": 1813}

publication_year = book["year"]
print(publication_year)  # Output: 1813

In the code provided:

Python searches for the key "year" in the book dictionary;
It retrieves the value associated with the key (1813) and assigns it to the variable publication_year.

The value is then printed, demonstrating how keys allow quick and specific access to dictionary values.

Opgave

Swipe to start coding

You are given a dictionary authors_books where the book author is the key and the list of book titles is the value.

Initialize the variable kings_books as a list of Stephen King's books.
Initialize the variable shekspeares_books as a list of Shakespeare's books.
You should initialize the variables by getting the data from the dictionary using the key.

Løsning

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Sektion 2. Kapitel 2

Accessing Dictionary Values

Let's build a dictionary to represent a book in a library:


              12
            
book = {"title": "Pride and Prejudice", "author": "Jane Austen", "year": 1813}
print(book)

This dictionary includes three key-value pairs:

In a dictionary, you can retrieve an item by referencing its key. Here's an example of accessing the publication year of the book:


              1234
            
book = {"title": "Pride and Prejudice", "author": "Jane Austen", "year": 1813}

publication_year = book["year"]
print(publication_year)  # Output: 1813

In the code provided:

Python searches for the key "year" in the book dictionary;
It retrieves the value associated with the key (1813) and assigns it to the variable publication_year.

The value is then printed, demonstrating how keys allow quick and specific access to dictionary values.

Opgave

Swipe to start coding

You are given a dictionary authors_books where the book author is the key and the list of book titles is the value.

Initialize the variable kings_books as a list of Stephen King's books.
Initialize the variable shekspeares_books as a list of Shakespeare's books.
You should initialize the variables by getting the data from the dictionary using the key.

Løsning

Skift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående muligheder

Var alt klart?

Tak for dine kommentarer!

Sektion 2. Kapitel 2

Skift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående muligheder