Usando el Método pop(): Eliminando Elementos con Valores de Retorno
El método pop() en los diccionarios de Python te permite eliminar un par clave-valor basado en su clave y devuelve el valor correspondiente. Este método es particularmente útil cuando necesitas extraer y procesar un valor mientras simultáneamente lo eliminas del diccionario.
La sintaxis es:
dictionary.pop(key)
book = {
"title": "Pride and Prejudice",
"author": "Jane Austen",
"year": 1813,
"copies": 5
}
# Remove the 'copies' key and retrieve its value
removed_copies = book.pop("copies")
print("Updated dictionary:", book)
print("Removed value:", removed_copies)
book = { "title": "Pride and Prejudice", "author": "Jane Austen", "year": 1813, "copies": 5 } # Remove the 'copies' key and retrieve its value removed_copies = book.pop("copies") print("Updated dictionary:", book) print("Removed value:", removed_copies)
Si la clave no existe en el diccionario, Python lanza una excepción KeyError.
book = {
"title": "Pride and Prejudice",
"author": "Jane Austen",
"year": 1813
}
# Attempting to remove a non-existent key
removed_genre = book.pop("genre")
book = { "title": "Pride and Prejudice", "author": "Jane Austen", "year": 1813 } # Attempting to remove a non-existent key removed_genre = book.pop("genre")
Tarea
Swipe to start coding
Se te da el mismo diccionario authors_books.
- Elimina los libros de
"Stephen King"del diccionario y guárdalos en la variablekings_books. - Usa el método
pop()para lograr esto.
Solución
authors_books = {
'William Shakespeare': ['Hamlet', 'Macbeth', 'Romeo and Juliet', 'Othello'],
'J.K. Rowling': ['Harry Potter and the Sorcerer\'s Stone', 'Harry Potter and the Chamber of Secrets', 'Harry Potter and the Prisoner of Azkaban', 'Harry Potter and the Goblet of Fire'],
'George Orwell': ['1984', 'Animal Farm', 'Coming Up for Air'],
'Stephen King': ['It', 'The Shining', 'Carrie', 'Misery'],
'Agatha Christie': ['Murder on the Orient Express', 'The Murder of Roger Ackroyd', 'And Then There Were None', 'Death on the Nile']
}
# Write your code here
kings_books = authors_books.pop('Stephen King')
# Testing
print(f"Updated dictionary: {authors_books}.\nStephen King\'s books: {kings_books}")
¿Todo estuvo claro?
¡Gracias por tus comentarios!
Sección 2. Capítulo 6
authors_books = {
'William Shakespeare': ['Hamlet', 'Macbeth', 'Romeo and Juliet', 'Othello'],
'J.K. Rowling': ['Harry Potter and the Sorcerer\'s Stone', 'Harry Potter and the Chamber of Secrets', 'Harry Potter and the Prisoner of Azkaban', 'Harry Potter and the Goblet of Fire'],
'George Orwell': ['1984', 'Animal Farm', 'Coming Up for Air'],
'Stephen King': ['It', 'The Shining', 'Carrie', 'Misery'],
'Agatha Christie': ['Murder on the Orient Express', 'The Murder of Roger Ackroyd', 'And Then There Were None', 'Death on the Nile']
}
# Write your code here
kings_books = ___
# Testing
print(f"Updated dictionary: {authors_books}.\nStephen King\'s books: {kings_books}")
