June 2021
Intermediate to advanced
286 pages
6h 29m
German
Content preview from Think Python, 2nd Edition
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KAPITEL 12
Tupel
Dieses Kapitel stellt einen weiteren fest eingebauten Typ vor: das Tupel. Sie erfahren, wie Listen, Dictionaries und Tupel zusammenarbeiten. Ich stelle Ihnen ein Feature vor, das bei Argumentlisten mit variabler Länge nützlich ist: die Gather- und Scatter-Operatoren.
Tupel sind unveränderbar
Ein Tupel ist eine Sequenz von Werten. Die Werte können beliebigen Typs sein und werden mit Integerwerten indiziert. Insofern sind Tupel Listen sehr ähnlich. Der Unterschied ist allerdings, dass Tupel nicht veränderbar sind.
Syntaktisch ist ein Tupel eine kommaseparierte Liste von Werten:
>>> t = 'a', 'b', 'c', 'd', 'e'
Es ist zwar nicht zwingend notwendig, aber üblicherweise werden Tupel in Klammern geschrieben:
>>> t = ('a', 'b', 'c', ...
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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.