■Symbols

- operator 558 != operator 558

#! character sequence 21 % character

conversion specifiers 56 % operator 558

& operator 558 *operator

as distribution operator 123, 124 as gathering operator 121

**operator

as distribution operator 123, 124 as gathering operator 122

*operator 558

**operator 558 + operator 558

concatenating sequences 551

.pyw file extension reasons for 280

/ operator 558 = operator 547

== operator 547, 558 > operator 558

>= operator 558

>> operator 558 ^ operator 558

__all__ Variable 212 __delattr__ method

implementing properties with old-style classes 188

__delitem__ method

basic sequence and mapping protocol 180

__dict__ attribute 156 __doc__ attribute 112 __future__ module 19 __getattr__ method

implementing properties with old-style classes 188, 189

__getattribute__ method endless loop trap 189

implementing properties with old-style classes 188

__getitem__ method 182

basic sequence and mapping protocol 180 __init__ method 173, 175

__iter__ method 173, 189, 190 __len__ method

basic sequence and mapping protocol 180, 182

__setattr__ method 188 __setitem__ method

basic sequence and mapping protocol 180 | operator 558

~ operator 558 ` ` backticks 551

converting a Python value to a string 25–26

■A

abs function 17, 559 abstraction 109, 139

classes

and types 147–148

attributes, functions and methods 149 creating 148

inheritance 153–154

assertEqual method TestCase class 348

AssertionError class 566 assertNotAlmostEqual method

TestCase class 348 assertNotEqual method TestCase class 348

assertRaises method TestCase class 348

assignment statements 13, 83, 566 = operator 547

augmented assignment statements 84, 85, 566

chained assignments 84 changing lists 41 sequence unpacking 83–84 slice assignments 42

asterisk width specifier 58 async_chat class

asynchat module 460 collect_incoming_data method 460–461 found_terminator method 460–461 handle_close method 461

push method 461 set_terminator method 460–461

asynchat module 302, 455–456 async_chat class 460 multiple connections 304

asynchronous I/O

multiple connections 304 select and poll functions 306

asyncore framework 456 asyncore module 302, 455–456

dispatcher class 457 loop method 458 multiple connections 304

AttributeError class 161, 170 attributes, binding to functions 149 augmented assignments 84–85, 566

■B

backticks (` `) 551

converting a Python value to a string 25–26 BaseRequestHandler class 303

bdist command 377

Beautiful Soup module 319–320

Beck, Kent et al

Refactoring 387

Test-Driven Development 387 binary mode

mode argument, open function 257 bind method

dispatcher class 458 socket class 298

blit method

pygame.display module 529

transfering contents of one surface to another 529

blocking 298

blocks, indentation 85–86, 547 blocks generator

instant markup project 394 body method

NNTP class 441, 442 bool function 559 Boole, George 86

Boolean statements 91–92

Boolean values 86

break statements, 98, 568 else clauses 167

build command 374 built-in functions 16–17, 559 built-in methods

issubclass method 153 bulletin board project 483

first implementation 486–489 further exploration 498

goals 483–484 preparations 484–485

578 ■I N D E X

problem 483

second implementation 489–490 edit.cgi 493–494

main.cgi 490, 492 save.cgi 494 testing 496 view.cgi 492–493

tools 484

■C

callable function 559 callback method

adding to handler superclass 398 callproc() method

cursor objects 289 Canvas class

line method 413 pdfgen module 413

catching exceptions 162

CGI (Common Gateway Interface) CGI security risks 323 debugging with cgitb 324 dynamic web pages 321

adding the Pound Bang line 321–322 preparing the Web server 321 setting file permissions 322

invoking CGI scripts without forms 326 remote editing with CGI 473–481 simple CGI script 323–324

simple form 327–328 using cgi module 325–326

cgi module 302, 321, 330, 474 using 325–326

cgitb module 330 debugging with 324, 474 enable function 324 tracebacks 486

chained assignments 84

chained comparison operators 89 character sets 237

ChatRoom class

commands implemented 466 ChatServer class 457–459 ChatSession class 459–463

enter method 466 checkIndex function 182 choice() function

random module 228 chr function 559

class keyword defining classes 550

class methods

creating with staticmethod and classmethod types 187

classes

and types 147–148

attributes, functions and methods 149 creating 148

defining classes 550 definitions 570 interfaces 155–156 methods 150–151

multiple superclasses 154–155 namespaces 151–152 subclassing built-in classes 173 superclasses 153

clear method dictionaries 72–73

close function fileinput module 219

close method

connection object 288, 486 cursor objects 289

file object 261 Shelve class 231

cmath module 18 Cmd class

cmd module 509

command interpretation, modeling 463–464

cmd module 252, 501 Cmd class 463–464, 509

cmp function 89, 559 code coverage

testing 343 collect_incoming_data method

async_chat class 460–461 collections module

deque type 225–226

command interpretation, modeling Cmd class 463–464

command prompt running scripts from 20

CommandHandler class creating rooms 464–465

command-line tools

using with subprocess module 352 comments 22, 112

commit method

connection object 288, 486 Common Gateway Interface. See CGI comp.lang.python Usenet group 573

comp.lang.python.announce Usenet group 573

comparison operators 89 chaining 89

comparing strings and sequences 91 equality operator 89

identity operator (is) 90, 91 membership operator (in) 91

compile function re module 239

complex function 559 compound statements 569 concatenation

sequences with plus sign + 551 strings 24

condition method rule objects 400, 401

conditional execution if Statements 87

conditional statements 86–87 elif clauses 88

else clauses 87 if statements 87

nesting blocks 88 conditions 86, 87

assertions 93

boolean statements 91–92 comparison operators 89–91

ConfigParser module 384 configuration 383

configuration files 384–385 extracting constants 383–384

conflict function 197 connect function

common parameters 287 connection object

methods 288

close method 486 commit method 486 cursor method 486

constructors 174

calling unbound superclass constructor 177–178

creating 174–175 overriding 175–177 super function 178–179

ContentHandler class xml.sax.handler module 425

continue statements 99, 568 conversion specifiers 54

anatomy 56 field width 57–58 precision 57 tuples 55

convert function 292 Cookie module 302