June 2021
Intermediate to advanced
286 pages
6h 29m
German
Content preview from Think Python, 2nd Edition
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KAPITEL 2
Variablen, Ausdrücke und Anweisungen
Eine der leistungsfähigsten Funktionen einer Programmiersprache ist die Fähigkeit, mit Variablen zu arbeiten. Ein Variablenname ist dabei ein Name, der sich auf einen Wert bezieht.
Zuweisungen
Durch eine Zuweisung wird eine neue Variable erstellt, und ihr wird ein Wert zugewiesen:
>>> meldung = 'Und jetzt etwas ganz anderes'
>>> n = 17
>>> pi = 3.1415926535897932
In diesem Beispiel erfolgen drei Zuweisungen. In der ersten wird einer neuen Variablen mit dem Namen meldung ein String zugewiesen. In der zweiten wird der Integer 17 an n übergeben. Und in der dritten Zuweisung wird der (ungefähre) Wert von π der Variablen pi zugewiesen.
Eine gebräuchliche Form, Variablen auf Papier darzustellen, besteht ...
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