August 2020
Intermediate to advanced
1496 pages
56h 25m
Polish
Content preview from Python
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Rozdział 17. Zasięgi
W rozdziale 16. wprowadzono podstawowe definicje i wywołania funkcji. Jak widzieliśmy, podstawowy model funkcji Pythona jest prosty w użyciu, jednak nawet proste przykłady funkcji sprawiły, że zaczęliśmy sobie zadawać pytania dotyczące znaczenia zmiennych w kodzie. W niniejszym rozdziale przedstawimy szczegóły dotyczące zasięgów nazw Pythona — miejsc, w których zmienne są definiowane i wyszukiwane. Podobnie jak pliki modułów, zasięgi pomagają zapobiegać kolizjom nazw w kodzie programu: nazwy zdefiniowane w jednej jednostce programowej nie kolidują z nazwami w innej.
Jak się przekonamy, miejsce, w którym zmienna jest przypisana w kodzie, ma kluczowe znaczenie w ustaleniu, co zmienna ta oznacza. Dowiemy się także, że korzystanie ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.