Starting Out with Python Chapter 9 Questions and Answers Already Passed

Starting Out with Python Chapter 9 Questions and Answers Already Passed What is the primary purpose of a dictionary in Python? A) To store data in a sequence B) To store key-value pairs C) To store only unique values D) To store data in a sorted order What is the result of calling `len()` on a dictionary? A) The number of keys B) The number of values C) The total number of key-value pairs D) An error How can you retrieve a value from a dictionary using a key? A) `(key)` B) `lue(key)` C) `dict[key]` 2 D) `Key()` What will happen if you try to access a non-existent key in a dictionary using square brackets? A) Returns `None` B) Raises a `KeyError` C) Adds the key to the dictionary with a default value D) Removes all keys What is the result of `"key" in my_dict` if `"key"` is a key in the dictionary? A) True B) False C) None D) Raises an error What method is used to get all the keys in a dictionary? A) `ys()` B) `()` C) `ys()` 3 D) `st()` What will `()` do to a dictionary? A) Remove a specific key-value pair B) Remove all key-value pairs C) Set all values to `None` D) Create a copy of the dictionary What is the result of calling `my_()`? A) A list of keys B) A list of values C) A view of key-value pairs D) A sorted list of keys Which method is used to remove a specific key-value pair from a dictionary? A) `pop()` B) `remove()` C) `delete()` 4 D) `discard()` What will happen if you try to add a key to a dictionary that already exists? A) Raises an error B) Updates the value of the existing key C) Removes the key D) No changes occur What does the `update()` method do in a dictionary? A) Removes duplicate keys B) Updates the dictionary with new key-value pairs C) Sorts the dictionary D) Clears the dictionary How can you create an empty dictionary?