Python Workout: 200 ten-minute exercises. 2 Ed

Python Workout....1

Praise for the First Edition....3

brief contents....10

contents....11

preface....15

acknowledgments....16

about this book....18

Who should read this book....19

How this book is organized: A road map....19

About the code....20

Software/hardware requirements....21

liveBook discussion forum....21

about the author....22

about the cover illustration....23

1 Improving your Python with practice....25

The role of exercises....26

Scope and goal....27

What’s in the book?....27

What do you need?....28

What about AI?....28

2 Numeric types....31

Useful references....32

Exercise 1 n Number guessing game....32

Working it out....33

Solution....35

Beyond the exercise....36

Exercise 2 n Summing numbers....38

Working it out....38

Solution....39

Beyond the exercise....39

Exercise 3 n Run timing....40

Working it out....41

Solution....42

Beyond the exercise....42

Exercise 4 n Hexadecimal output....43

Working it out....44

Solution....44

Beyond the exercise....45

Summary....45

3 Strings....46

Useful references....47

Exercise 5 n Pig Latin....47

Working it out....48

Solution....49

Beyond the exercise....49

Exercise 6 n Pig Latin sentence....51

Working it out....51

Solution....52

Beyond the exercise....53

Exercise 7 n Ubbi Dubbi....53

Working it out....54

Solution....54

Beyond the exercise....54

Exercise 8 n Sorting a string....55

Working it out....55

Solution....56

Beyond the exercise....56

Summary....57

4 Lists and tuples....58

Useful references....59

Exercise 9 n First-last....60

Working it out....60

Solution....64

Beyond the exercise....64

Exercise 10 n Summing anything....66

Working it out....67

Solution....68

Beyond the exercise....69

Exercise 11 n Alphabetizing countries....69

Working it out....70

Solution....72

Beyond the exercise....72

Exercise 12 n Word with most repeated letters....75

Working it out....76

Solution....77

Beyond the exercise....78

Exercise 13 n Printing tuple records....78

Working it out....79

Solution....79

Beyond the exercise....80

Summary....80

5 Dictionaries and sets....81

Hashing and dicts....82

Sets....83

Useful references....84

Exercise 14 n Restaurant....84

Working it out....85

Solution....86

Beyond the exercise....86

Exercise 15 n Rainfall....87

Working it out....87

Solution....91

Beyond the exercise....91

Exercise 16 n Dictdiff....91

Working it out....92

Solution....95

Beyond the exercise....95

Exercise 17 n How many different numbers?....96

Working it out....96

Solution....97

Beyond the exercise....97

Summary....97

6 Files....99

Useful references....100

Exercise 18 n Final line....100

Working it out....101

Solution....104

Beyond the exercise....105

Exercise 19 n /etc/passwd to dict....106

Working it out....107

Solution....107

Beyond the exercise....108

Exercise 20 n Word count....109

Working it out....110

Solution....112

Beyond the exercise....112

Exercise 21 n Longest word per file....112

Working it out....113

Solution....114

Beyond the exercise....114

Exercise 22 n Reading and writing CSV....116

Working it out....118

Solution....119

Beyond the exercise....119

Exercise 23 n JSON....119

Working it out....120

Solution....122

Beyond the exercise....123

Exercise 24 n Reverse lines....123

Working it out....123

Solution....124

Beyond the exercise....124

Summary....125

7 Functions....126

Useful references....127

Exercise 25 n XML generator....129

Working it out....129

Solution....131

Beyond the exercise....131

Exercise 26 n Prefix notation calculator....135

Working it out....136

Solution....138

Beyond the exercise....138

Exercise 27 n Password generator....139

Working it out....140

Solution....141

Beyond the exercise....142

Summary....142

8 Functional programming with comprehensions....143

Useful references....144

Exercise 28 n Join numbers....145

Working it out....146

Solution....149

Beyond the exercise....149

Exercise 29 n Add numbers....152

Working it out....152

Solution....154

Beyond the exercise....154

Exercise 30 n Flatten a list....154

Working it out....155

Solution....155

Beyond the exercise....155

Exercise 31 n Pig Latin translation of a file....156

Working it out....156

Solution....157

Beyond the exercise....158

Exercise 32 n Flip a dict....158

Working it out....158

Solution....159

Beyond the exercise....159

Exercise 33 n Transform values....160

Working it out....160

Solution....161

Beyond the exercise....161

Exercise 34 n (Almost) supervocalic words....162

Working it out....162

Solution....164

Beyond the exercise....164

Exercise 35a n Gematria, part 1....164

Working it out....165

Solution....165

Beyond the exercise....165

Exercise 35b n Gematria, part 2....166

Working it out....167

Solution....167

Beyond the exercise....168

Summary....168

9 Modules and packages....169

Useful references....170

Exercise 36 n Sales tax....173

Working it out....174

Solution....175

Beyond the exercise....176

Exercise 37 n Menu....177

Working it out....178

Solution....179

Beyond the exercise....179

Summary....181

10 Objects....182

What are objects, anyway?....182

Why use objects?....183

Practicing with objects....185

Useful references....185

Exercise 38 n Ice cream scoop....186

Working it out....187

Solution....188

Beyond the exercise....188

Exercise 39 n Ice cream bowl....191

Working it out....193

Solution....194

Beyond the exercise....195

Exercise 40 n Bowl limits....198

Working it out....198

Solution....200

Beyond the exercise....201

Exercise 41 n A bigger bowl....203

Working it out....203

Solution....204

Beyond the exercise....205

Exercise 42 n FlexibleDict....205

Working it out....206

Solution....207

Beyond the exercise....207

Exercise 43 n Animals....208

Working it out....208

Solution....210

Beyond the exercise....211

Exercise 44 n Cages....211

Working it out....212

Solution....213

Beyond the exercise....214

Exercise 45 n Zoo....214

Working it out....215

Solution....216

Beyond the exercise....217

Summary....217

11 Iterators and generators....218

What is a for loop?....218

Python’s iteration protocol....219

Making your class iterable....219

Other iterators....221

Useful references....221

Exercise 46 n MyEnumerate....223

Working it out....223

Solution....224

Beyond the exercise....225

Exercise 47 n Circle....225

Working it out....225

Solution....226

Beyond the exercise....227

Exercise 48 n All lines, all files....227

Working it out....228

Solution....229

Beyond the exercise....229

Exercise 49 n Elapsed since....230

Working it out....230

Solution....231

Beyond the exercise....231

Exercise 50 n MyChain....232

Working it out....232

Solution....233

Beyond the exercise....233

Summary....233

Conclusion....234

12 Where to from here?....235

What next?....236

Keep in touch....236

index....237

Symbols....237

A....237

B....237

C....237

D....237

E....237

F....237

G....237

H....238

I....238

J....238

K....238

L....238

M....238

N....238

O....238

P....238

R....238

S....238

T....239

V....239

W....239

Y....239

Python Workout - back....241

The only way to master a skill is practice, practice, practice. That’s exactly what you’ll do in this book! In this instantly-valuable book you’ll work through 200 carefully selected exercises that flex your programming muscles.

You’ll practice core Python language features and techniques that reinforce the programming patterns you’ll use every day and build the skills you need to troubleshoot your programs.

In Python Workout, Second Edition you’ll find 200 exercises, including:

• Working with text using strings
• Mastering dictionaries and sets
• Reading, writing, and manipulating files
• Functional programming with comprehensions
• Python modules and packages
• Creating iterators and generators

About the technology

Become a champion Python programmer by making its most powerful features second nature! In this unique book, internationally-recognized Python trainer Reuven Lerner builds your mental muscle by guiding you through 200 targeted exercises.

About the book

Python Workout, Second Edition is a hands-on training program designed to boost your productivity and code quality. You’ll practice everything from basics like strings and dictionaries to techniques for writing elegant, data-agnostic code with dynamic typing, generic functions, and comprehensions. Each exercise includes a detailed solution along with additional challenges that help you push your skills even farther.

What's inside

• Lock in essential Python skills
• Improve your code readability and maintainability
• Prepare for AI-assisted workflows

About the reader

For beginning to intermediate Python programmers.