Chapter 12

Question 1

dictionary

Answer 1

A collection of key-value pairs that maps from keys to values. The keys can be any immutable type, and the values can be any type.

Question 2

mapping type

Answer 2

A mapping type is a data type comprised of a collection of keys and associated values. Python’s only built-in mapping type is the dictionary. Dictionaries implement the associative array abstract data type.

Question 3

key

Answer 3

A data item that is mapped to a value in a dictionary. Keys are used to look up values in a dictionary.

Question 4

key-value pair

Answer 4

One of the pairs of items in a dictionary. Values are looked up in a dictionary by key.

Question 5

hint

Answer 5

Temporary storage of a precomputed value to avoid redundant computation.

Question 6

event

Answer 6

A signal such as a keyboard press, mouse click, or message from another program.

Question 7

event-driven program

Answer 7

In computer programming, event-driven programming or event-based programming is a programming paradigm in which the flow of the program is determined by events—i.e., sensor outputs or user actions (mouse clicks, key presses) or messages from other programs or threads.

Question 8

event loop

Answer 8

A programming construct that waits for events and processes them.

Question 9

overflow

Answer 9

A numerical result that is too large to be represented in a numerical format.