Description

Book Synopsis

Zed A. Shaw is the author of the popular books, Learn Python the Hard Way, Learn Ruby the Hard Way, and Learn C the Hard Way. He is also the creator of several open source software projects and has been programming and writing for nearly 30 years. Most of his free time is devoted to the study of painting and art history.



Table of Contents

Preface xix

Module 1: Getting Started in Python 1

Exercise 0: Gearing Up 2
General Instructions 2
Minimalist Start 3
Complete Instructions 3
Testing Your Setup 3
Learning the Command Line 4
Next Steps 5

Exercise 1: A Good First Program 6
What You Should See 7
Study Drills 8
Common Student Questions 9
The Blue Plus 9

Exercise 2: Comments and Pound Characters 10
What You Should See 10
Study Drills 10
Common Student Questions 11

Exercise 3: Numbers and Math 12
What You Should See 13
Study Drills 13
Common Student Questions 13

Exercise 4: Variables and Names 16
What You Should See 17
Study Drills 17
Common Student Questions 17

Exercise 5: More Variables and Printing 20
What You Should See 20
Study Drills 21
Common Student Questions 21

Exercise 6: Strings and Text 22
What You Should See 23
Study Drills 23
Break It 23
Common Student Questions 24

Exercise 7: Combining Strings 26
What You Should See 26
Study Drills 26
Break It 27
Common Student Questions 27

Exercise 8: Formatting Strings Manually 28
What You Should See 28
Study Drills 29
Common Student Questions 29

Exercise 9: Multi-Line Strings 30
What You Should See 30
Study Drills 31
Common Student Questions 31

Exercise 10: Escape Codes in Strings 32
What You Should See 33
Escape Sequences 33
Study Drills 34
Common Student Questions 34

Exercise 11: Asking People Questions 36
What You Should See 36
Study Drills 37
Common Student Questions 37

Exercise 12: An Easier Way to Prompt 38
What You Should See 38
Study Drills 38
Common Student Questions 39

Exercise 13: Parameters, Unpacking, Variables 40
Code Description 41
Hold Up! Features Have Another Name 42
What You Should See 42
Study Drills 43
Common Student Questions 43

Exercise 14: Prompting and Passing 46
What You Should See 47
Study Drills 47
Common Student Questions 47

Exercise 15: Reading Files 50
What You Should See 51
Study Drills 51
Common Student Questions 52

Exercise 16: Reading and Writing Files 54
What You Should See 55
Study Drills 55
Common Student Questions 56

Exercise 17: More Files 58
What You Should See 59
Study Drills 59
Common Student Questions 59

Module 2: The Basics of Programming 61

Exercise 18: Names, Variables, Code, Functions 62
Exercise Code 63
What You Should See 65
Study Drills 65
Common Student Questions 66

Exercise 19: Functions and Variables 68
What You Should See 69
Study Drills 70
Common Student Questions 70

Exercise 20: Functions and Files 72
What You Should See 73
Study Drills 73
Common Student Questions 74

Exercise 21: Functions Can Return Something 76
What You Should See 77
Study Drills 77
Common Student Questions 78

Exercise 22: Strings, Bytes, and Character Encodings 80
Initial Research 80
Switches, Conventions, and Encodings 82
Dissecting the Output 84
Dissecting the Code 84
Encodings Deep Dive 86
Breaking It 87

Exercise 23: Introductory Lists 88
Accessing Elements of a List 88
Practicing Lists 89
The Code 89
The Challenge 90
Final Challenge 91

Exercise 24: Introductory Dictionaries 92
Key/Value Structures 92
Combining Lists with Data Objects 93
The Code 94
What You Should See 95
The Challenge 95
Final Challenge 96

Exercise 25: Dictionaries and Functions 98
Step 1: Function Names Are Variables 98
Step 2: Dictionaries with Variables 98
Step 3: Dictionaries with Functions 99
Step 4: Deciphering the Last Line 99
Study Drill 100

Exercise 26: Dictionaries and Modules 102
Step 1: Review of import 102
Step 2: Find the __dict__ 102
Step 3: Change the __dict__ 103
Study Drill: Find the "Dunders" 104

Exercise 27: The Five Simple Rules to the Game of Code 106
Rule 1: Everything Is a Sequence of Instructions 106
Rule 2: Jumps Make the Sequence Non-Linear 108
Rule 3: Tests Control Jumps 110
Rule 4: Storage Controls Tests 111
Rule 5: Input/Output Controls Storage 112
Putting It All Together 113

Exercise 28: Memorizing Logic 116
The Truth Terms 116
The Truth Tables 117
Common Student Questions 119

Exercise 29: Boolean Practice 120
What You Should See 122
Study Drills 122
Common Student Questions 122

Exercise 30: What If 124
What You Should See 124
dis() It 125
Study Drill 125
Common Student Questions 125

Exercise 31: Else and If 126
What You Should See 127
dis() It 127
Study Drills 128
Common Student Questions 128

Exercise 32: Making Decisions 130
What You Should See 131
dis() It 131
Study Drills 132
Common Student Questions 132

Exercise 33: Loops and Lists 134
What You Should See 135
dis() It 136
Study Drills 137
Common Student Questions 137

Exercise 34: While Loops 138
What You Should See 139
dis() It 139
Study Drills 140
Common Student Questions 140

Exercise 35: Branches and Functions 142
What You Should See 143
Study Drills 144
Common Student Questions 144

Exercise 36: Designing and Debugging 146
From Idea to Working Code 146
Rules for If-Statements 149
Rules for Loops 149
Tips for Debugging 149
Homework 150

Exercise 37: Symbol Review 152
Keywords 152
Data Types 153
String Escape Sequences 154
Old-Style String Formats 154
Operators 155
Reading Code 156
Study Drills 157
Common Student Questions 157

Module 3: Applying What You Know 159

Exercise 38: Beyond Jupyter for Windows 160
Why Learn PowerShell? 161
What Is PowerShell? 161
Crash Landing 171

Exercise 39: Beyond Jupyter for macOS/Linux 172
Why Learn Bash or ZSH? 173
What Is Bash? 173
Crash Landing 184

Exercise 40: Advanced Developer Tools 186
Managing conda Environments 186
Adding conda-forge 187
Using pip 188
Using a .condarc 188
General Editing Tips 189
Going Further 189

Exercise 41: A Project Skeleton 190
Activate an Environment 190
Just Use cookiecutter 190
Building Your Project 191
Installing Your Project 191
Testing the Install 192
Remove test-project 192
Common Errors 193
Study Drills 193

Exercise 42: Doing Things to Lists 194
What You Should See 195
What Lists Can Do 196
When to Use Lists 197
Study Drills 197
Common Student Questions 198

Exercise 43: Doing Things to Dictionaries 200
A Dictionary Example 201
What You Should See 203
What Dictionaries Can Do 203
Study Drills 204
Common Student Questions 204

Exercise 44: From Dictionaries to Objects 206
Step 1: Passing a Dict to a Function 206
Step 2: talk inside the Dict 207
Step 3: Closures 208
Step 4: A Person Constructor 209
Study Drills 211

Exercise 45: Basic Object-Oriented Programming 212
Python's People 212
Using dir() and __dict__ 213
About the Dot (.) 214
Terminology 215
A Word on self 216
Study Drills 217
Common Student Questions 217

Exercise 46: Inheritance and Advanced OOP 218
How This Looks in Code 219
About class Name(object) 221
Study Drills 221
Common Student Questions 222

Exercise 47: Basic Object-Oriented Analysis and Design 224
The Analysis of a Simple Game Engine 225
Top Down versus Bottom Up 229
The Code for "Gothons from Planet Percal #25" 230
What You Should See 236
Study Drills 237
Common Student Questions 237

Exercise 48: Inheritance versus Composition 238
What Is Inheritance? 238
The Reason for super() 243
Composition 243
When to Use Inheritance or Composition 245
Study Drill 245
Common Student Questions 246

Exercise 49: You Make a Game 248
Evaluating Your Game 248
Function Style 249
Class Style 249
Code Style 250
Good Comments 250
Evaluate Your Game 250

Exercise 50: Automated Testing 252
What Is the Purpose of Testing? 252
How to Test Efficiently 252
Install PyTest 253
Simple PyTest Demo 254
Running pytest 255
Exceptions and try/except 255
Getting Coverage Reports 256
Study Drills 256
Common Student Questions 257

Module 4: Python and Data Science 259

Exercise 51: What Is Data Munging? 260
Why Data Munging? 261
The Problem 261
The Setup 262
How to Code 262
Process Example 263
Solution Strategies 265
Awesome ETL Tools 266
Study Drills 266

Exercise 52: Scraping Data from the Web 268
Introducing with 268
The Problem 269
The Setup 269
The Clue 270
Awesome Scraping Tools 270
Study Drills 271

Exercise 53: Getting Data from APIs 272
Introducing JSON 272
The Problem 273
The Setup 274
The Clue 274
Awesome API Tools 275
Study Drills 275

Exercise 54: Data Conversion with pandas 276
Introducing Pandoc 276
The Problem 276
The Setup 277
The Clue 277
Study Drills 278

Exercise 55: How to Read Documentation (Featuring pandas) 280
Why Programmer Documentation Sucks 280
How to Actively Read Programmer Docs 281
Step #1: Find the Docs 281
Step #2: Determine Your Strategy 282
Step #3: Code First, Docs Second 283
Step #4: Break or Change the Code 283
Step #5: Take Notes 284
Step #6: Use It on Your Own 284
Step #7: Write About What You Learned 284
Step #8: What’s the Gestalt? 285
Reading My pandas Curriculum 286

Exercise 56: Using Only pandas 288
Make a Project 288
The Problem 288
The Setup 289
Study Drill 289

Exercise 57: The SQL Crash Course 290
What Is SQL? 290
The Setup 291
Fixing and Loading 292
Create, Read, Update, Delete 293
SELECT 293
Date and Time 294
INSERT 295
UPDATE 296
DELETE and Transactions 297
Math, Aggregates, and GROUP BY 298
Python Access 299

Exercise 58: SQL Normalization 300
What Is Normalization? 300
First Normal Form 301
Second Normal Form (2NF) 303
Querying 2NF Data 306
Querying with Joins 308
Study Drills 308

Exercise 59: SQL Relationships 310
One-to-Many (1:M) 310
Many-to-Many (M:M) 311
One-to-One (1:1) 312
Attributed Relations 313
Querying M:M Tables 313
Your Last Study Drill 314

Exercise 60: Advice from an Even Older Programmer 316

Index 318

Learn Python the Hard Way

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    A Paperback / softback by Zed Shaw

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      Publisher: Pearson Education (US)
      Publication Date: 06/01/2024
      ISBN13: 9780138270575, 978-0138270575
      ISBN10: 0138270570
      Also in:
      Computing Programming and scripting languages: general

      Description

      Book Synopsis

      Zed A. Shaw is the author of the popular books, Learn Python the Hard Way, Learn Ruby the Hard Way, and Learn C the Hard Way. He is also the creator of several open source software projects and has been programming and writing for nearly 30 years. Most of his free time is devoted to the study of painting and art history.



      Table of Contents

      Preface xix

      Module 1: Getting Started in Python 1

      Exercise 0: Gearing Up 2
      General Instructions 2
      Minimalist Start 3
      Complete Instructions 3
      Testing Your Setup 3
      Learning the Command Line 4
      Next Steps 5

      Exercise 1: A Good First Program 6
      What You Should See 7
      Study Drills 8
      Common Student Questions 9
      The Blue Plus 9

      Exercise 2: Comments and Pound Characters 10
      What You Should See 10
      Study Drills 10
      Common Student Questions 11

      Exercise 3: Numbers and Math 12
      What You Should See 13
      Study Drills 13
      Common Student Questions 13

      Exercise 4: Variables and Names 16
      What You Should See 17
      Study Drills 17
      Common Student Questions 17

      Exercise 5: More Variables and Printing 20
      What You Should See 20
      Study Drills 21
      Common Student Questions 21

      Exercise 6: Strings and Text 22
      What You Should See 23
      Study Drills 23
      Break It 23
      Common Student Questions 24

      Exercise 7: Combining Strings 26
      What You Should See 26
      Study Drills 26
      Break It 27
      Common Student Questions 27

      Exercise 8: Formatting Strings Manually 28
      What You Should See 28
      Study Drills 29
      Common Student Questions 29

      Exercise 9: Multi-Line Strings 30
      What You Should See 30
      Study Drills 31
      Common Student Questions 31

      Exercise 10: Escape Codes in Strings 32
      What You Should See 33
      Escape Sequences 33
      Study Drills 34
      Common Student Questions 34

      Exercise 11: Asking People Questions 36
      What You Should See 36
      Study Drills 37
      Common Student Questions 37

      Exercise 12: An Easier Way to Prompt 38
      What You Should See 38
      Study Drills 38
      Common Student Questions 39

      Exercise 13: Parameters, Unpacking, Variables 40
      Code Description 41
      Hold Up! Features Have Another Name 42
      What You Should See 42
      Study Drills 43
      Common Student Questions 43

      Exercise 14: Prompting and Passing 46
      What You Should See 47
      Study Drills 47
      Common Student Questions 47

      Exercise 15: Reading Files 50
      What You Should See 51
      Study Drills 51
      Common Student Questions 52

      Exercise 16: Reading and Writing Files 54
      What You Should See 55
      Study Drills 55
      Common Student Questions 56

      Exercise 17: More Files 58
      What You Should See 59
      Study Drills 59
      Common Student Questions 59

      Module 2: The Basics of Programming 61

      Exercise 18: Names, Variables, Code, Functions 62
      Exercise Code 63
      What You Should See 65
      Study Drills 65
      Common Student Questions 66

      Exercise 19: Functions and Variables 68
      What You Should See 69
      Study Drills 70
      Common Student Questions 70

      Exercise 20: Functions and Files 72
      What You Should See 73
      Study Drills 73
      Common Student Questions 74

      Exercise 21: Functions Can Return Something 76
      What You Should See 77
      Study Drills 77
      Common Student Questions 78

      Exercise 22: Strings, Bytes, and Character Encodings 80
      Initial Research 80
      Switches, Conventions, and Encodings 82
      Dissecting the Output 84
      Dissecting the Code 84
      Encodings Deep Dive 86
      Breaking It 87

      Exercise 23: Introductory Lists 88
      Accessing Elements of a List 88
      Practicing Lists 89
      The Code 89
      The Challenge 90
      Final Challenge 91

      Exercise 24: Introductory Dictionaries 92
      Key/Value Structures 92
      Combining Lists with Data Objects 93
      The Code 94
      What You Should See 95
      The Challenge 95
      Final Challenge 96

      Exercise 25: Dictionaries and Functions 98
      Step 1: Function Names Are Variables 98
      Step 2: Dictionaries with Variables 98
      Step 3: Dictionaries with Functions 99
      Step 4: Deciphering the Last Line 99
      Study Drill 100

      Exercise 26: Dictionaries and Modules 102
      Step 1: Review of import 102
      Step 2: Find the __dict__ 102
      Step 3: Change the __dict__ 103
      Study Drill: Find the "Dunders" 104

      Exercise 27: The Five Simple Rules to the Game of Code 106
      Rule 1: Everything Is a Sequence of Instructions 106
      Rule 2: Jumps Make the Sequence Non-Linear 108
      Rule 3: Tests Control Jumps 110
      Rule 4: Storage Controls Tests 111
      Rule 5: Input/Output Controls Storage 112
      Putting It All Together 113

      Exercise 28: Memorizing Logic 116
      The Truth Terms 116
      The Truth Tables 117
      Common Student Questions 119

      Exercise 29: Boolean Practice 120
      What You Should See 122
      Study Drills 122
      Common Student Questions 122

      Exercise 30: What If 124
      What You Should See 124
      dis() It 125
      Study Drill 125
      Common Student Questions 125

      Exercise 31: Else and If 126
      What You Should See 127
      dis() It 127
      Study Drills 128
      Common Student Questions 128

      Exercise 32: Making Decisions 130
      What You Should See 131
      dis() It 131
      Study Drills 132
      Common Student Questions 132

      Exercise 33: Loops and Lists 134
      What You Should See 135
      dis() It 136
      Study Drills 137
      Common Student Questions 137

      Exercise 34: While Loops 138
      What You Should See 139
      dis() It 139
      Study Drills 140
      Common Student Questions 140

      Exercise 35: Branches and Functions 142
      What You Should See 143
      Study Drills 144
      Common Student Questions 144

      Exercise 36: Designing and Debugging 146
      From Idea to Working Code 146
      Rules for If-Statements 149
      Rules for Loops 149
      Tips for Debugging 149
      Homework 150

      Exercise 37: Symbol Review 152
      Keywords 152
      Data Types 153
      String Escape Sequences 154
      Old-Style String Formats 154
      Operators 155
      Reading Code 156
      Study Drills 157
      Common Student Questions 157

      Module 3: Applying What You Know 159

      Exercise 38: Beyond Jupyter for Windows 160
      Why Learn PowerShell? 161
      What Is PowerShell? 161
      Crash Landing 171

      Exercise 39: Beyond Jupyter for macOS/Linux 172
      Why Learn Bash or ZSH? 173
      What Is Bash? 173
      Crash Landing 184

      Exercise 40: Advanced Developer Tools 186
      Managing conda Environments 186
      Adding conda-forge 187
      Using pip 188
      Using a .condarc 188
      General Editing Tips 189
      Going Further 189

      Exercise 41: A Project Skeleton 190
      Activate an Environment 190
      Just Use cookiecutter 190
      Building Your Project 191
      Installing Your Project 191
      Testing the Install 192
      Remove test-project 192
      Common Errors 193
      Study Drills 193

      Exercise 42: Doing Things to Lists 194
      What You Should See 195
      What Lists Can Do 196
      When to Use Lists 197
      Study Drills 197
      Common Student Questions 198

      Exercise 43: Doing Things to Dictionaries 200
      A Dictionary Example 201
      What You Should See 203
      What Dictionaries Can Do 203
      Study Drills 204
      Common Student Questions 204

      Exercise 44: From Dictionaries to Objects 206
      Step 1: Passing a Dict to a Function 206
      Step 2: talk inside the Dict 207
      Step 3: Closures 208
      Step 4: A Person Constructor 209
      Study Drills 211

      Exercise 45: Basic Object-Oriented Programming 212
      Python's People 212
      Using dir() and __dict__ 213
      About the Dot (.) 214
      Terminology 215
      A Word on self 216
      Study Drills 217
      Common Student Questions 217

      Exercise 46: Inheritance and Advanced OOP 218
      How This Looks in Code 219
      About class Name(object) 221
      Study Drills 221
      Common Student Questions 222

      Exercise 47: Basic Object-Oriented Analysis and Design 224
      The Analysis of a Simple Game Engine 225
      Top Down versus Bottom Up 229
      The Code for "Gothons from Planet Percal #25" 230
      What You Should See 236
      Study Drills 237
      Common Student Questions 237

      Exercise 48: Inheritance versus Composition 238
      What Is Inheritance? 238
      The Reason for super() 243
      Composition 243
      When to Use Inheritance or Composition 245
      Study Drill 245
      Common Student Questions 246

      Exercise 49: You Make a Game 248
      Evaluating Your Game 248
      Function Style 249
      Class Style 249
      Code Style 250
      Good Comments 250
      Evaluate Your Game 250

      Exercise 50: Automated Testing 252
      What Is the Purpose of Testing? 252
      How to Test Efficiently 252
      Install PyTest 253
      Simple PyTest Demo 254
      Running pytest 255
      Exceptions and try/except 255
      Getting Coverage Reports 256
      Study Drills 256
      Common Student Questions 257

      Module 4: Python and Data Science 259

      Exercise 51: What Is Data Munging? 260
      Why Data Munging? 261
      The Problem 261
      The Setup 262
      How to Code 262
      Process Example 263
      Solution Strategies 265
      Awesome ETL Tools 266
      Study Drills 266

      Exercise 52: Scraping Data from the Web 268
      Introducing with 268
      The Problem 269
      The Setup 269
      The Clue 270
      Awesome Scraping Tools 270
      Study Drills 271

      Exercise 53: Getting Data from APIs 272
      Introducing JSON 272
      The Problem 273
      The Setup 274
      The Clue 274
      Awesome API Tools 275
      Study Drills 275

      Exercise 54: Data Conversion with pandas 276
      Introducing Pandoc 276
      The Problem 276
      The Setup 277
      The Clue 277
      Study Drills 278

      Exercise 55: How to Read Documentation (Featuring pandas) 280
      Why Programmer Documentation Sucks 280
      How to Actively Read Programmer Docs 281
      Step #1: Find the Docs 281
      Step #2: Determine Your Strategy 282
      Step #3: Code First, Docs Second 283
      Step #4: Break or Change the Code 283
      Step #5: Take Notes 284
      Step #6: Use It on Your Own 284
      Step #7: Write About What You Learned 284
      Step #8: What’s the Gestalt? 285
      Reading My pandas Curriculum 286

      Exercise 56: Using Only pandas 288
      Make a Project 288
      The Problem 288
      The Setup 289
      Study Drill 289

      Exercise 57: The SQL Crash Course 290
      What Is SQL? 290
      The Setup 291
      Fixing and Loading 292
      Create, Read, Update, Delete 293
      SELECT 293
      Date and Time 294
      INSERT 295
      UPDATE 296
      DELETE and Transactions 297
      Math, Aggregates, and GROUP BY 298
      Python Access 299

      Exercise 58: SQL Normalization 300
      What Is Normalization? 300
      First Normal Form 301
      Second Normal Form (2NF) 303
      Querying 2NF Data 306
      Querying with Joins 308
      Study Drills 308

      Exercise 59: SQL Relationships 310
      One-to-Many (1:M) 310
      Many-to-Many (M:M) 311
      One-to-One (1:1) 312
      Attributed Relations 313
      Querying M:M Tables 313
      Your Last Study Drill 314

      Exercise 60: Advice from an Even Older Programmer 316

      Index 318

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