June 2021
Intermediate to advanced
286 pages
6h 29m
German
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KAPITEL 11
Dictionaries
Dieses Kapitel stellt einen weiteren fest eingebauten Typ vor, der Dictionary genannt wird. Dictionaries sind eines der besten Python-Features. Sie bilden die Grundlage für viele effiziente und elegante Algorithmen.
Ein Dictionary ist ein Mapping
Ein Dictionary ist wie eine Liste, aber generischer. In einer Liste müssen die Indizes Integerwerte sein, in einem Dictionary können Sie dagegen (fast) alle Datentypen als Index verwenden.
Ein Dictionary können Sie sich als Mapping zwischen einer Reihe von Indizes (Schlüssel genannt) und einer Reihe von Werten vorstellen. Die Verknüpfung eines Schlüssels mit einem Wert bezeichnet man als Schlüssel/Wert-Paar oder manchmal als Element.
Als Beispiel erstellen wir ein Dictionary in ...
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