Python in 24 Hours

93 HOUR 9 Using Dictionaries to Pair Keys with Values 95 Creating a Dictionary 95 Getting Information About a Dictionary 97 Comparing Dictionaries. 98 Using Dictionaries in the Real World 99 Summary 101 Q&A 101 Workshop 101 HOUR 10 Making Objects 103 Object-Oriented Programming 103 Planning an Object 107 Making Objects Out of Objects 108 Using Objects in the Real World 110 Summary 111 Q&A 111 Workshop 111 HOUR 11 Making Classes 113 Making a Basic Class Statement 113 Adding Methods to Classes 114 Setting Up Class Instances 116 Using Classes in the Real World 119 Summary 122 Q&A 122 Workshop 122 HOUR 12 Expanding Classes to Add Functionality 125 Built-in Extras 125 Class Inheritance 130 When to Expand Classes in the Real World 134 Summary 136 Q&A 136 Workshop 137 HOUR 13 Using Python's Modules to Add Functionality 139 Python Packages 139 Using the random Module 140 Using the datetime Module 143 Finding More Modules 145 Using Modules in the Real World 146 Summary 147 Q&A 147 Workshop 148 HOUR 14 Splitting Up a Program 149 Why Split Up a Program? 149 Deciding How to Break Up Code 150 How Python Finds a Program's Code 152 Splitting Up Code in the Real World 155 Summary 157 Q&A 157 Workshop 158 HOUR 15 Providing Documentation for Code 159 The Need for Good Documentation 159 Embedding Comments in Code 160 Explaining Code with Docstrings 162 Including README and INSTALL 164 Providing Documentation in the Real World 167 Summary 168 Q&A 168 Workshop 169 HOUR 16 Working with Program Files 171 Reading to and Writing from Files 171 Creating Files 174 Getting Information About a Directory 175 Getting Information About a File 178 Using Files in the Real World 180 Summary 181 Q&A 181 Workshop 181 HOUR 17 Sharing Information with JSON 183 The JSON Format 183 Working with JSON Files 185 Saving Objects as JSON 188 Creating Custom Dictionaries 189 Using JSON in the Real World 191 Summary 194 Q&A 194 Workshop 195 HOUR 18 Storing Information in Databases 197 Why Use Databases? 197 Talking to Databases with SQL. 198 Creating a Database 200 Querying the Database 203 Using Databases in the Real World 205 Summary 207 Q&A 207 Workshop 208 HOUR 19 Using SQL to Get More out of Databases 209 Filtering with WHERE 210 Sorting with ORDER BY 214 Getting Unique Items with DISTINCT 215 Updating Records with UPDATE 215 Deleting Records with DELETE 216 Using SQL in the Real World 217 Summary 220 Q&A 220 Workshop 221 HOUR 20 Developing for the Web with Flask 223 What Is Flask? 223 Installing Flask 225 Making Your First Flask App 228 Adding Templates 231 Using Frameworks in the Real World 237 Summary 238 Q&A 238 Workshop 239 HOUR 21 Making Games with PyGame 241 What Is PyGame? 241 Installing PyGame 242 Creating Screens 243 Creating Shapes 245 Moving Things Around on the Screen 248 Getting Input from the User 250 Drawing Text. 252 Using PyGame in the Real World 253 Summary 257 Q&A 257 Workshop 258 HOUR 22 Saving Your Code Properly Through Versioning 259 What Is Versioning? 259 Versioning with Git and GitHub 261 Managing Code in a Repository 263 Experimental Changes with Branches 267 Determining What Not to Push 270 Summary 271 Q&A 271 Workshop 271 HOUR 23 Fixing Problem Code 273 When Your Code Has a Bug 273 Locating Errors with a Traceback 274 Finding Errors with the pdb Debugger 275 Searching the Internet for Solutions 278 Trying a Fix 279 Finding Outside Support 280 Summary 282 Q&A 282 Workshop 283 HOUR 24 Taking the Next Steps with Python 285 Interesting Projects 285 Attending Conferences 288 Working with Linux 288 Contributing to Python 290 Contributing to Other Projects 290 Learning Another Language 290 Looking Forward to Python 3 291 Recommended Reading 292 Recommended Websites. 292 Summary 293 Q&A 293 Workshop 293 Index 295