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■CONTENTS xix ■CHAPTER 22 Project 3: XML for All Occasions . . . . . . . . . . . . . . . . . . . . . . . . 421 What’s the Problem? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 421 Specific Goals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 422 Useful Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 422 Preparations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 423 First Implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 424 Creating a Simple Content Handler. . . . . . . . . . . . . . . . . . . . . . . . . . 425 Creating HTML Pages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 428 Second Implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 430 A Dispatcher Mix-In Class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 430 Factoring Out the Header, Footer, and Default Handling . . . . . . . . 432 Support for Directories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 432 The Event Handlers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 433 Further Exploration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 437 What Now? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 437 ■CHAPTER 23 Project 4: In the News . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 439 What’s the Problem? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 439 Specific Goals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 440 Useful Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 440 Preparations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 440 First Implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 441 Second Implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 444 Further Exploration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 452 What Now? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 453 ■CHAPTER 24 Project 5: A Virtual Tea Party . . . . . . . . . . . . . . . . . . . . . . . . . . . . 455 What’s the Problem? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 455 Specific Goals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 455 Useful Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 456 What’s It For? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 456 Preparations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 456 First Implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 457 The ChatServer Class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 457 The ChatSession Class. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 459 Putting It Together . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 461
xx ■CONTENTS Second Implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 463 Basic Command Interpretation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 463 Rooms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 464 Login and Logout Rooms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 465 The Main Chat Room . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 466 The New Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 466 Further Exploration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 472 What Now? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 472 ■CHAPTER 25 Project 6: Remote Editing with CGI . . . . . . . . . . . . . . . . . . . . . . 473 What’s the Problem? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 473 Specific Goals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 473 Useful Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 474 Preparations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 474 First Implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 474 Second Implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 476 index.html . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 476 edit.cgi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 476 save.cgi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 478 Running the Editor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 479 Further Exploration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 481 What Now? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 481 ■CHAPTER 26 Project 7: Your Own Bulletin Board . . . . . . . . . . . . . . . . . . . . . 483 What’s the Problem? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 483 Specific Goals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 483 Useful Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 484 Preparations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 484 First Implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 486 Second Implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 489 main.cgi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 490 view.cgi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 492 edit.cgi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 493 save.cgi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 494 Trying It Out. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 496 Further Exploration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 498 What Now? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 498
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APPENDIX A ■ ■ ■ The Short Ve
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558 APPENDIX B ■ PYTHON REFERENCE
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572 APPENDIX C ■ ONLINE RESOURCES
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Index ■Symbols - operator 558 !=
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■INDEX 577 assertEqual method Tes
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■INDEX 579 cmd module 252, 501 Cm
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■INDEX 581 get method 74-75 has_k
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■INDEX 583 ■F Factory class twi
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■INDEX 585 finding conflicts 197
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■INDEX 587 initialization 38 nami
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■INDEX 589 localtime function tim
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■INDEX 591 nesting blocks 88 Netw
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■INDEX 593 playful programming 38
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■INDEX 595 Python C API 365 hand-
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■INDEX 601 TestCase class methods
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■INDEX 603 further exploration 47
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