Instructor Solutions Manual

Instructor Solutions Manual (Page 1 of 212)

INSTRUCTOR

SOLUTIONS

MANUAL

to accompany An Introduction to Programming Using Python

by David I. Schneider

© 2016 Pearson Education, Inc., Hoboken, NJ. All rights reserved.Download Link at the end of this File 1 / 4

Instructor Solutions Manual (Page 2 of 212)

CONTENTS

Chapter 2 Core Objects, Variables, Input, and Output 2.1 Numbers 3 2.2 Strings 5 2.3 Output 10 2.4 Lists, Tuples, and Files – an Introduction 13 Programming Projects Chapter 2 15

Chapter 3 Structures that Control Flow 3.1 Relational and Logical Operators 18 3.2 Decision Structures 18 3.3 The while Loop 24 3.4 The for Loop 30 Programming Projects Chapter 3 40

Chapter 4 Functions 4.1 Functions, Part 1 43 4.2 Functions, Part 2 50 Programming Projects Chapter 4 62

Chapter 5 Processing Data 5.1 Processing Data, Part 1 69 5.2 Processing Data, Part 2 75 5.3 Processing Data with Dictionaries 86 Programming Projects Chapter 5 95

Chapter 6 Miscellaneous Topics 6.1 Exception Handling 104 6.2 Selecting Random Values 106 6.3 Turtle Graphics 111 6.4 Recursion 130 Programming Projects Chapter 6 132

Chapter 7 Object-Oriented Programming 7.1 Classes and Objects 137 7.2 Inheritance 147 Programming Projects Chapter 7 154

Chapter 8 Graphical User Interface 8.1 Widgets 159 8.2 The Grid Geometry Manager 167 8.3 Writing GUI Programs 178 Programming Projects Chapter 8 207 © 2016 Pearson Education, Inc., Hoboken, NJ. All rights reserved. 2 / 4

Instructor Solutions Manual (Page 3 of 212)

Answers

CHAPTER 2

EXERCISES

2.1

1.

12 2. 49 3. .125 4. 23 5. 8 6. -96 7. 2 8. 2

9.

• 3 11. 1 12. 0 13. Not valid 14. Not valid

15.Valid 16. Not valid 17. Not valid 18. Not valid 19. 10

20.

14 21. 16 22. 16 23. 9 24. 8

• print((7 * 8) + 5) 26. (1 + (2 * 9)) **3

• print(.055 * 20) 28. 15 – (3 * (2 + (3 ** 4)))

• print(17 * (3 + 162)) 30. (4 + (1 / 2)) – (3 + (5 / 8))

31.

x y x = 2 2 does not exist y = 3 * x 2 6 x = y + 5 11 6 print(x + 4) 11 6 y = y + 1 11 7

32.

bal inter withDr bal = 100 100 does not exist does not exist inter = .05 100 .05 does not exist withDr = 25 100 .05 25 bal += (inter * bal) 105 .05 25 bal = bal - withDr 80 .05

33. 24 34. 1 8 9 35. 10 36. 225

37. 2 15 38. 5 10 39.

The third line should read c = a + b.

4

• 1,234 should not contain a comma; $100 should not have a dollar sign; Deposit should begin

with a lowercase letter d.

41 . The first line should read interest = 0.05. 43. 10 45. 7 47. 3.128

49.

-2 50. 2 51. 0 52 . 1 53. 6 54. 1

• cost += 5 56. sum *= 2 57. cost /= 6 58. sum - = 7

• sum %= 2 60. cost //= 3 © 2016 Pearson Education, Inc., Hoboken, NJ. All rights reserved. 3 / 4

Instructor Solutions Manual (Page 4 of 212)

• revenue = 98456

costs = 45000 profit = revenue - costs print(profit)

• costPerShare = 25.625

numberOfShares = 400 amount = costPerShare * numberOfShares print(amount)

• price = 19.95

discountPercent = 30 markdown = (discountPercent / 100) * price price - = markdown print(round(price, 2))

• fixedCosts = 5000

pricePerUnit = 8 costPerUnit = 6 breakEvenPoint = fixedCosts / (pricePerUnit – costPerUnit) print(breakEvenPoint)

• balance = 100

balance += 0.05 * balance balance += 0.05 * balance balance += 0.05 * balance print(round(balance, 2))

• balance = 100

balance = ((1.05) * balance) + 100 balance = ((1.05) * balance) + 100 balance *= 1.05 print(round(balance, 2))

• balance = 100

balance *= 1.05 ** 10 print(round(balance, 2))

• purchasePrice = 10

sellingPrice = 15 percentProfit = 100 * ((sellingPrice – purchasePrice) / purchasePrice) print(percentProfit)

• tonsPerAcre = 18

acres = 30 totalTonsProduced = tonsPerAcre * acres print(totalTonsProduced )

• initialVelocity = 50

initialHeight = 5 t = 3 height = (-16 * (t ** 2)) + (initialVelocity * t) + initialHeight print(height) © 2016 Pearson Education, Inc., Hoboken, NJ. All rights reserved.

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