COMSC20 Ch. 4 - Conditionals

block.

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A group of consecutive statements with the same indentation.

body.

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The block of statements in a compound statement that follows the header.

boolean expression.

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An expression that evaluates to either True or False.

boolean function.

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A function that returns a boolean value. The only possible values of the bool type are False and True.

boolean value.

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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.

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One of the possible paths of the flow of execution determined by conditional execution.

chained conditional.

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A conditional branch with more than two possible flows of execution. In Python chained conditionals are written with if ... elif ... else statements.

comparison operator.

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One of the operators that compares two values: ==, !=, >, <, >=, and <=.

condition.

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The boolean expression in a conditional statement that determines which branch is executed.

conditional statement.

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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.

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One of the operators that combines boolean expressions: and, or, and not.

modulus operator.

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An operator, denoted with a percent sign ( %), that works on integers and yields the remainder when one number is divided by another.

nesting.

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One program structure within another, such as a conditional statement inside a branch of another conditional statement.