April 2025
Intermediate to advanced
1648 pages
52h 55m
Italian
Content preview from Imparare Python, 5a edizioneBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Capitolo 9. Tuple, file e tutto il resto
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Questo capitolo completa il nostro tour approfondito dei tipi di oggetti principali di Python esplorando la tupla, un insieme di altri oggetti che non possono essere modificati, e il file, un'interfaccia per i file esterni del tuo computer. Come vedrai, la tupla è un oggetto relativamente semplice che esegue in gran parte le operazioni che hai già imparato a conoscere per le stringhe e le liste. L'oggetto file è uno strumento molto utilizzato e completo per elaborare i file sul tuo computer. Poiché i file sono così diffusi nella programmazione, la panoramica di base sui file qui riportata è integrata da esempi più ampi nei capitoli successivi.
Questo capitolo conclude questa parte del libro esaminando le proprietà comuni a tutti i tipi di oggetto principali che abbiamo incontrato: le nozioni di uguaglianza, i confronti, le copie di oggetti e così via. Esploreremo anche brevemente altri tipi di oggetti presenti nella cassetta degli attrezzi di Python, tra cui il segnaposto None e l'ibrido namedtuple; come vedrai, anche se abbiamo coperto tutti i tipi primari incorporati, la storia degli oggetti in Python è più ampia di quanto ho lasciato intendere finora. Infine, concluderemo questa parte del libro dando un'occhiata a una serie di comuni insidie legate ai tipi di oggetto ed esplorando alcuni esercizi che ...
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