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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Chapter 24. Grundlagen zu Ausnahmen
In diesem Teil geht es um Ausnahmen, d.h. um Ereignisse, die den Kontrollfluss eines Programms verändern können. Wenn in Python Fehler auftreten, werden automatisch Ausnahmen ausgelöst. Diese können von Ihrem eigenen Code sowohl ausgelöst als auch abgefangen werden. Ausnahmen werden mit drei neuen Anweisungen verarbeitet, die wir in diesem Teil vorstellen. Die erste Anweisung existierte bis Python 2.4 in zwei getrennten Varianten, liegt aber ab Python 2.5 in vereinheitlichter Form vor:
try/exceptFängt Ausnahmen ab, die von Python oder von Ihrem Programm ausgelöst werden.
try/finallyFührt Aufräumarbeiten durch, ob nun Ausnahmen auftreten oder nicht.
try/except/finallyKombiniert die ersten beiden Varianten (ab Python ...
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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.