August 2007
Beginner to intermediate
656 pages
17h 20m
German
Content preview from Einfüehrung in PythonBecome 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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Ausdrücke
In Python können Sie auch Ausdrücke als Anweisungen benutzen. Aber da das Ergebnis eines Ausdrucks nicht gespeichert wird, macht das nur dann Sinn, wenn der Ausdruck einen sinnvollen Seiteneffekt hat. Ausdrücke werden gemeinhin in zwei Situationen als Anweisung benutzt:
- Um Funktionen und Methoden aufzurufen
Manche Funktionen und Methoden verrichten viel Arbeit, ohne einen Wert zurückzugeben. Da Sie dann kein Interesse an deren Rückgabewert haben, können Sie solche Funktionen mit einer Ausdrucksanweisung aufrufen. In anderen Sprachen werden solche Funktionen manchmal Prozeduren genannt. In Python sind das Funktionen, die keinen Wert zurückgeben.
- Um Werte an der interaktiven Eingabeaufforderung auszugeben
Python gibt die Ergebnisse von Ausdrücken, ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.