November 2024
Intermediate to advanced
1014 pages
27h 21m
French
Content preview from Fluent Python, 2ème édition
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Chapitre 8. Indications de type dans les fonctions
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Il faut également souligner que Python restera un langage dynamiquement typé, et que les auteurs n'ont aucune envie de rendre un jour les indications de type obligatoires, même par convention.
Guido van Rossum, Jukka Lehtosalo, et Łukasz Langa, PEP 484-Type Hints (indices de type).1
Les indications de type constituent le plus grand changement dans l'histoire de Python depuis l'unification des types et des classesdans Python 2.2, sorti en 2001.Cependant, les indications de type ne profitent pas de la même façon à tous les utilisateurs de Python.C'est pourquoi elles devraient toujours être facultatives.
LaPEP 484-Type Hints a introduit la syntaxe et la sémantique pour les déclarations de type explicites dans les arguments des fonctions, les valeurs de retour et les variables. L'objectif est d'aider les outils de développement à trouver des bogues dans les bases de code Python via l'analyse statique, c'est-à-dire sans réellement faire passer le code par des tests.
Les principaux bénéficiaires sont les ingénieurs logiciels professionnels qui utilisent des IDE (environnements de développement intégré) et des CI (intégration continue). L'analyse coûts-avantages qui rend les indices de type attrayants pour ce groupe ne s'applique pas à tous les utilisateurs de Python.
La base d'utilisateurs de Python est ...
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