Chapter 7

Question 1

TF

A simple decision can be implemented with an if statement.

Answer 1

True

Question 2

TF

In Python conditions, ≠ is written as /=.

Answer 2

False

Question 3

TF

Strings are compared by lexicographic ordering.

Answer 3

True

Question 4

TF

A two-way decision is implemented using an if-elif statement.

Answer 4

False

Question 5

TF

The math.sqrt function cannot computer the square root or a negative number.

Answer 5

False

Question 6

TF

A single try statement can catch multiple kinds of errors.

Answer 6

True

Question 7

TF

Multi-way decisions must be handled by nesting multiple if-else statements.

Answer 7

False

Question 8

TF

There is usually only one correct solution to a problem involving decision structures.

Answer 8

False

Question 9

TF

The condition x <= y <= z is allowed in Python.

Answer 9

True

Question 10

TF

Input validation means prompting a user when input is required.

Answer 10

False

Question 11

A statement that controls the execution of other statements is called a

Answer 11

control structure

Question 12

The best structure for implementing a multi-way decision in Python is

Answer 12

if-elif-else

Question 13

An expression that evaluates to either true or false is called

Answer 13

Boolean

Question 14

When a program is being run directly (not imported), the value of __name__ is

Answer 14

__main__

Question 15

The literals for type bool are

Answer 15

True, False

Question 16

Placing a decision inside of another decision is an example of

Answer 16

Nesting

Question 17

In Python, the body of a decision is indicated by

Answer 17

indentation

Question 18

A structure in which one decision leads to another set of decisions, which leads to another set of decisions, etc., is called a decisio

Answer 18

Tree

Question 19

Taking the square root of a negative value with math.sqrt produces a(n)

Answer 19

ValueError

Question 20

A multiple choice question is most similar to

Answer 20

multi-way decisions