Chapter 4 Flashcards
block
A group of consecutive statements with the same indentation.
body
The block of statements in a compound statement that follows the header.
boolean expression
An expression that is either true or false.
boolean value
There are exactly two boolean values: True and False. Boolean values result when a boolean expression is evaluated by the Python interepreter. They have type bool.
branch
One of the possible paths of the flow of execution determined by conditional execution.
chained conditional
A conditional branch with more than two possible flows of execution. In Python chained conditionals are written with if … elif … else statements.
comparison operator
One of the operators that compares two values: ==, !=, >, =, and <=.
condition
The boolean expression in a conditional statement that determines which branch is executed.
conditional statement
A statement that controls the flow of execution depending on some condition. In Python the keywords if, elif, and else are used for conditional statements.
logical operator
One of the operators that combines boolean expressions: and, or, and not.
modulus operator
An operator, denoted with a percent sign ( %), that works on integers and yields the remainder when one number is divided by another.
nesting
One program structure within another, such as a conditional statement inside a branch of another conditional statement.
prompt
A visual cue that tells the user to input data.
type conversion
An explicit statement that takes a value of one type and computes a corresponding value of another type.
wrapping code in a function
The process of adding a function header and parameters to a sequence of program statements is often refered to as “wrapping the code in a function”. This process is very useful whenever the program statements in question are going to be used multiple times.
