Python Dictionary Quiz

What is a dictionary in Python?

• A type of loop used to iterate over a sequence of elements.

• An unordered collection of key-value pairs.

• A collection of elements that can only be accessed by index.

• A data structure that stores elements in a specific order.

How do you access the value of a specific key in a dictionary?

• dictionary.value(key)

• dictionary.get(key)

• dictionary[key]

• dictionary[key] = value

What happens if you try to access a key that does not exist in a dictionary?

• ValueError

• KeyError

• TypeError

• IndexError

How do you add a new key-value pair to an existing dictionary?

• my_dict[new_key] = new_value

• my_dict.append(new_key, new_value)

• my_dict.update(new_key, new_value)

• my_dict.add(new_key, new_value)

How do you update the value of an existing key in a dictionary?

• Use the update() method on the dictionary

• Delete the key and add a new key-value pair with the updated value

• Assign a new value to the key

• Use the modify() function on the dictionary

How do you remove a key-value pair from a dictionary?

• my_dict.remove(key)

• my_dict.pop(key)

• del my_dict[key]

• my_dict.delete(key)

What is the 'values()' method used for in Python dictionaries?

• To return the values of a dictionary

• To remove a key-value pair from a dictionary

• To add a new key-value pair to a dictionary

• To return the keys of a dictionary