February 2012
Intermediate to advanced
435 pages
15h 13m
French
Content preview from Apprendre à programmer avec Python 3
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3
Contrôle du flux d’exécution
Dans notre premier chapitre, nous avons vu que l’activité essentielle d’un programmeur est la résolution de problèmes. Or, pour résoudre un problème informatique, il faut toujours effectuer une série d’actions dans un certain ordre. La description structurée de ces actions et de l’ordre dans lequel il convient de les effectuer s’appelle un algorithme.
Le « chemin » suivi par Python à travers un programme est appelé un flux d’exécution, et les constructions qui le modifient sont appelées des instructions de contrôle de flux.
Les structures de contrôle sont les groupes d’instructions qui déterminent l’ordre dans lequel les actions sont effectuées. En programmation moderne, il en existe seulement trois : la séquence ...
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