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CHAPTER 25 ■ PROJECT 6: REMOTE EDITING WITH CGI 479 As you can see, a small change in the password gives you a completely different digest. You can see the code for save.cgi in Listing 25-3. Listing 25-3. The Saving Script (save.cgi) #!/usr/bin/env python print 'Content-type: text/html\n' from os.path import join, abspath import cgi, sha, sys BASE_DIR = abspath('data') form = cgi.FieldStorage() text = form.getvalue('text') filename = form.getvalue('filename') password = form.getvalue('password') if not (filename and text and password): print 'Invalid parameters.' sys.exit() if sha.sha(password).hexdigest() != '8843d7f92416211de9ebb963ff4ce28125932878': print 'Invalid password' sys.exit() f = open(join(BASE_DIR,filename), 'w') f.write(text) f.close() print 'The file has been saved.' Running the Editor Follow these steps to use the editor: 1. Open the page index.html in a Web browser. Be sure to open it through a Web server (by using a URL of the form http://www.someserver.com/index.html) and not as a local file. The result is shown in Figure 25-2.
480 CHAPTER 25 ■ PROJECT 6: REMOTE EDITING WITH CGI Figure 25-2. The opening page of the CGI editor 2. Enter a file name of a file that your CGI editor is permitted to modify, and click Open. Your browser should then contain the output of the edit.cgi script, as shown in Figure 25-3. Figure 25-3. The editing page of the CGI editor
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Beginning Python From Novice to Pro
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For Ranveig
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■CHAPTER 23 Project 4: In the New
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viii ■CONTENTS Strings . . . . .
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x ■CONTENTS ■CHAPTER 5 Conditio
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xii ■CONTENTS ■CHAPTER 8 Except
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xiv ■CONTENTS ■CHAPTER 11 Files
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xvi ■CONTENTS Dynamic Web Pages w
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xviii ■CONTENTS ■CHAPTER 20 Pro
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xx ■CONTENTS Second Implementatio
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xxii ■CONTENTS Preparations . . .
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About the Technical Reviewer ■JER
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Introduction A C program is like a
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CHAPTER 1 ■ ■ ■ Instant Hacki
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CHAPTER 1 ■ INSTANT HACKING: THE
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CHAPTER 2 ■ ■ ■ Lists and Tup
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CHAPTER 2 ■ LISTS AND TUPLES 33 I
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CHAPTER 2 ■ LISTS AND TUPLES 35 A
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CHAPTER 2 ■ LISTS AND TUPLES 37 >
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CHAPTER 2 ■ LISTS AND TUPLES 39 M
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CHAPTER 2 ■ LISTS AND TUPLES 49 a
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CHAPTER 2 ■ LISTS AND TUPLES 51 S
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CHAPTER 3 ■ ■ ■ Working with
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CHAPTER 3 ■ WORKING WITH STRINGS
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CHAPTER 4 ■ ■ ■ Dictionaries:
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CHAPTER 4 ■ DICTIONARIES: WHEN IN
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82 CHAPTER 5 ■ CONDITIONALS, LOOP
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100 CHAPTER 5 ■ CONDITIONALS, LOO
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110 CHAPTER 6 ■ ABSTRACTION But w
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112 CHAPTER 6 ■ ABSTRACTION ■Ti
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114 CHAPTER 6 ■ ABSTRACTION Can I
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116 CHAPTER 6 ■ ABSTRACTION stora
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118 CHAPTER 6 ■ ABSTRACTION 4. Yo
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120 CHAPTER 6 ■ ABSTRACTION The p
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122 CHAPTER 6 ■ ABSTRACTION >>> p
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124 CHAPTER 6 ■ ABSTRACTION Also,
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126 CHAPTER 6 ■ ABSTRACTION Feel
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128 CHAPTER 6 ■ ABSTRACTION ■No
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130 CHAPTER 6 ■ ABSTRACTION So yo
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132 CHAPTER 6 ■ ABSTRACTION numer
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134 CHAPTER 6 ■ ABSTRACTION LAMBD
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136 CHAPTER 6 ■ ABSTRACTION In th
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138 CHAPTER 6 ■ ABSTRACTION Scope
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140 CHAPTER 7 ■ MORE ABSTRACTION
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160 CHAPTER 8 ■ EXCEPTIONS >>> im
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162 CHAPTER 8 ■ EXCEPTIONS Custom
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164 CHAPTER 8 ■ EXCEPTIONS More T
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166 CHAPTER 8 ■ EXCEPTIONS try: x
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168 CHAPTER 8 ■ EXCEPTIONS Invali
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170 CHAPTER 8 ■ EXCEPTIONS If you
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CHAPTER 9 ■ ■ ■ Magic Methods
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CHAPTER 9 ■ MAGIC METHODS, PROPER
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CHAPTER 10 ■ ■ ■ Batteries In
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CHAPTER 10 ■ BATTERIES INCLUDED 2
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256 CHAPTER 11 ■ FILES AND STUFF
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270 CHAPTER 12 ■ GRAPHICAL USER I
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CHAPTER 13 ■ ■ ■ Database Sup
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CHAPTER 13 ■ DATABASE SUPPORT 287
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298 CHAPTER 14 ■ NETWORK PROGRAMM
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314 CHAPTER 15 ■ PYTHON AND THE W
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CHAPTER 16 ■ ■ ■ Testing, 1-2
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358 CHAPTER 17 ■ EXTENDING PYTHON
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CHAPTER 18 ■ ■ ■ Packaging Yo
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CHAPTER 18 ■ PACKAGING YOUR PROGR
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CHAPTER 19 ■ ■ ■ Playful Prog
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CHAPTER 19 ■ PLAYFUL PROGRAMMING
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392 CHAPTER 20 ■ PROJECT 1: INSTA
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CHAPTER 21 ■ ■ ■ Project 2: P
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CHAPTER 21 ■ PROJECT 2: PAINTING
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CHAPTER 22 ■ ■ ■ Project 3: X
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CHAPTER 22 ■ PROJECT 3: XML FOR A
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APPENDIX A ■ ■ ■ The Short Ve
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APPENDIX A ■ THE SHORT VERSION 54
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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 597 ■S safe_substitute m
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■INDEX 599 split function re modu
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■INDEX 601 TestCase class methods
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■INDEX 603 further exploration 47
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