June 2015
Intermediate to advanced
464 pages
12h 3m
German
Content preview from Raspberry Pi programmieren mit Python
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Kapitel 4: Funktionen
Programmtexte können lang und schwer verständlich werden. Mit Funktionen können Sie ein Programm übersichtlicher gestalten. Sie zerlegen eine komplexe Aufgabe in kleinere Teile und definieren für jede Teilaufgabe eine eigene Funktion. Im Hauptprogramm werden dann diese Funktionen aufgerufen. Eine Funktion übernimmt Daten als Eingabe, verarbeitet diese und liefert dann ein Objekt als Ausgabe zurück.
In diesem Kapitel erhalten Sie zunächst einen Einblick in Grundprinzipien der Python-Funktionen. Anschließend geht es darum, wie man eigene Funktionen definiert. Dabei werden folgende Punkte behandelt:
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Positions- und Schlüsselwort-Argumente
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Default-Werte für Argumente
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Rekursion (Beispiel: Fraktale)
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Testen von Vorbedingungen ...
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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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.