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P. 441

the index


           tkinter library, 233–236, 238, 255, 341          view, 277. (see also widgets)
           toggle switch. (see Checkbutton() widget)        visual toggle. (see Checkbutton() widget)
           transaction file, 179–184, 188–191               volume, adjusting, 336–345
           true value, 14
           try statement, 298–300, 311
           TVN example, 169–174. (see also game show example)  W
           Twitter, sending messages to, 93–98, 101
           TypeError message, 63–64                         wait_finish() function, 221, 223
           types. (see datatypes)                           WAV files, 221, 223
                                                            web pages, as strings, 49
                                                            West, Dave (Head First Object-Oriented Analysis &
                                                                 Design), 392
           U                                                while loop, 29–33, 61–65

                                                            white space
           Unicode character encoding system, 394
                                                               in code, 22
           unittest module, 389                                removing from strings, 56
           upper() method, strings, 54, 56                     specifying in format strings, 182
           uppercase, converting strings to, 54                splitting strings at, 121–124
                                                            widgets
           urllib.request library, 69
                                                               Button() widget, 234–236, 239–244, 245, 255
           urlopen() function, 49
                                                               choosing, 341
                                                               compared to objects, 368
                                                               for data entry. (see data entry widgets)
           V                                                   event loop for, 255
                                                               Frame() widget, 364, 373, 383
                                                               grouping, 363–364
           ValueError message, 119–120                         Label() widget, 248–253, 255
           variables, 4, 35                                    list of, 248
              collections of. (see data structures)            positioning, 235–238
              control variables, 278                        Window Manager, 348
              global variables, 108–109, 244                Window Manager events, 319–324, 326–327
              local variables, 105, 106, 111                WM_DELETE_WINDOW message, 322
              scope of, 104–108, 111
                                                            WM_SAVE_YOURSELF message, 322
           vi editor, 395
                                                            WM_TAKE_FOCUS message, 322








           406    Index
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