Complete Solutions Manual & Answer Guide — Fundamentals of Python: First Programs, 3rd Edition — Kenneth A. Lambert, 2021 — ISBN 9780357881019 — All Chapters Covered 1–13 (Latest Update)

Solution and Answer Guide For All Chapters: Lambert, Fundamentals of Python: First Programs, 3e, CY24, 9780357881019; Chapter 1, Introduction
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Solution and Answer Guide For All Chapters x3 x3 x3 x3 x3 x3




LAMBERT, FUNDAMENTALS OF PYTHON: FIRST PROGRAMS, 3E, CY24, 9780357881019; CHAPTER 1,
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INTRODUCTION
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TABLE OF CONTENTS X3 X3




Exercise Solutions ...................................................................................................................................... 1
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Exercise 1.1 ............................................................................................................................................. 1
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Exercise 1.2 ............................................................................................................................................. 2
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Exercise 1.3 ............................................................................................................................................. 3
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Review Questions Answers........................................................................................................................ 4
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Programming Exercises Solutions ............................................................................................................ 8
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Debugging Exercises Solutions.................................................................................................................. 8
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EXERCISE SOLUTIONS X3




EXERCISE 1.1 X3




1. List three common types of computing agents.
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Solution:

Human beings, desktop computers, cell phones x3 x3 x3 x3 x3




2. Write an algorithm that describes the second part of the process of making change (counting out the coins
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and bills).
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Solution:

There are various ways to do this, but here is one:
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Repeat
Select the largest unit of money that is less than or equal to the remaining change
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Subtract this unit from the remaining change
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Until the remaining change is 0 x3 x3 x3 x3 x3




The collection of units selected represent the change
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3. Write an algorithm that describes a common task, such as baking a cake.
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© 2024 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible
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1
website, in whole or in part.
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,Solution and Answer Guide For All Chapters: Lambert, Fundamentals of Python: First Programs, 3e, CY24, 9780357881019; Chapter 1, Introduction
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Solution:

There are various ways to do this, but here is one:
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Preheat an oven to 375 degrees x3 x3 x3 x3 x3




Add 1 cup of water and 1 egg to a mixing bowl
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Beat the liquid mixture in the bowl until the ingredients are blended Add
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the contents of a boxed cake mix to the mixing bowl
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Beat the mixture in the bowl until the ingredients are blended
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Pour the contents of the mixing bowl into a lightly greased cake pan
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Bake the cake in the oven for 45 minutes
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4. Describe an instruction that is not well defined and thus could not be included as a step in an algorithm.
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Give an example of such an instruction.
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Solution:

Attempting to divide a number by 0 x3 x3 x3 x3 x3 x3




5. In what sense is a laptop computer a general-purpose problem-solving machine?
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Solution:

A laptop computer is a general-purpose problem-solving machine because it is programmable and can solve
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any problem for which there is an algorithm.
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6. List four devices that use computers and describe the information that they process. (Hint: Think of the
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inputs and outputs of the devices.)
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Solution:
Digital camera—images, music player—sound, cell phone—text, ATM—numbers
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EXERCISE 1.2 X3




1. List two examples of input devices and two examples of output devices.
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Solution:
Input devices—keyboard and mouse, output devices—monitor and speakers
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2. What does the central processing unit (CPU) do?
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Solution:
The CPU fetches, decodes, and executes instructions.
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3. How is information represented in hardware memory?
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Solution:
Information is represented using binary notation, which in hardware is a pattern of voltage levels.
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© 2024 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible
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2
website, in whole or in part.
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,Solution and Answer Guide For All Chapters: Lambert, Fundamentals of Python: First Programs, 3e, CY24, 9780357881019; Chapter 1, Introduction
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4. What is the difference between a terminal-based interface and a graphical user interface?
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Solution:
A terminal-based interface supports only the input and output of text with a keyboard and monitor. A
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graphical user interface supports the output of images and the manipulation of them with a pointing device,
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the mouse.
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5. What role do translators play in the programming process?
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Solution:
A translator converts a program written in a high-level language (human readable and writable) to an
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equivalent program in a low-level language (machine readable and executable).
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EXERCISE 1.3 X3




1. Describe what happens when the programmer enters the string "Greetings!" in the Python shell.
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Solution:

Python reads the string "Greetings!", evaluates it, and displays this string (including single quotes) in
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the shell.
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2. Write a line of code that prompts the user for their name and saves the user’s input in a variable called
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name.

Solution:
name= input("Enter your name: ")
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3. What is a Python script?
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Solution:

A Python script is a complete Python program that can be run from a computer’s operating system.
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4. Explain what goes on behind the scenes when your computer runs a Python program.
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Solution:

If the program has not already been translated, Python’s compiler translates it to byte code. The Python
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virtual machine then executes this code.
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© 2024 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible
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3
website, in whole or in part.
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, Solution and Answer Guide For All Chapters: Lambert, Fundamentals of Python: First Programs, 3e, CY24, 9780357881019; Chapter 1, Introduction
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REVIEW QUESTIONS ANSWERS X3 X3




1. Which of the following is an example of an algorithm?
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a. A dictionary
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b. A recipe
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c. A shopping list
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d. The spelling checker of a word processor
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Answer: b x3




Feedback:

a. Incorrect. A dictionary is a data structure. x3 x3 x3 x3 x3 x3




b. Correct. A recipe is a set of instructions that describes a process that halts with a solution to a problem.
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c. Incorrect. A shopping list is a data structure. x3 x3 x3 x3 x3 x3 x3




d. Incorrect. A word processor is a program that consists of instructions and data.
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2. Which of the following contains information?
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a. An audio CD x3 x3




b. A refrigerator
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c. An automobile x3




d. A stereo speaker
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x3Answer: a x3




x3Feedback:

a. Correct. The information on an audio CD represents sound.
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b. Incorrect. A refrigerator contains just food, if it’s not empty.x3 x3 x3 x3 x3 x3 x3 x3 x3




c. Incorrect. An automobile contains a steering wheel, engine, exhaust pipe, and so on.
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d. Incorrect. A stereo speaker contains a magnetic coil, wires, and so on.
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3. Which of the following is a general-purpose computing device?
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a. A smartphone
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b. A portable music player
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c. A microwave oven
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d. A programmable thermostat
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© 2024 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible
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4
website, in whole or in part.
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