What does the values() method return in Python dictionaries?
a) A view object that displays all the values in the dictionary
b) A view object that displays all the keys in the dictionary
c) A new dictionary with only values
d) A list of key-value pairs
Answer:
a) A view object that displays all the values in the dictionary
Explanation:
The values()
method in Python dictionaries returns a view object that displays all the values stored in the dictionary. Similar to the keys()
method, the values()
view object is dynamic and reflects any changes made to the dictionary after the method is called.
# Example of values() method
student = {"name": "John", "age": 20, "major": "Computer Science"}
values = student.values()
print(values) # Output: dict_values(['John', 20, 'Computer Science'])
# Updating a value
student["age"] = 21
print(values) # Output: dict_values(['John', 21, 'Computer Science'])
In this example, the values()
method returns a view object containing the values of the student
dictionary. After updating a value, the view object automatically reflects the change.
The values()
method is useful when you need to access or inspect all the values in a dictionary, particularly when working with dynamic or frequently updated dictionaries.