phone number validator script, 333 - 334
photos
centering, 503 - 507
scaling, 501 - 503
special presentations, 521 - 525
storing on removable drive, 498 - 501Pi Cobbler
circuit, building, 537 - 538
connecting to GPIO interface, 532 - 533pin layout, GPIO interface, 530
pipe symbol (|), 331
placeholders
{} placeholder, 102 - 103
named placeholders, 210 - 211
positional placeholders, 210plain text as regular expression pattern, 321 - 323
playing music, 514 - 521
playlists, 516 - 517
songs, queuing, 515playlists, 516 - 517
randomizing, 521plugging in peripherals, 21 - 23
plus sign (+), 330
polling, 545 - 546
polymorphism, 306
pop() function, 163
popping list values, 163
populating
dictionaries, 176 - 178
sets, 188 - 189 , 194portable power supplies, 15
positional formatting, 214 - 215
positional parameters, 246
positional placeholders, 210
POSIX BRE (Basic Regular Expression) engine, 318
POSIX ERE (Extended Regular Expression) engine, 318
PostgreSQL, 447 , 458 - 466
databases
connecting to, 463 - 464
creating, 459 - 460