November 2024
Intermediate to advanced
456 pages
11h 58m
French
Content preview from Maîtriser Python pour la bioinformatique
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Chapitre 1. Fréquence des tétranucléotides : Compter les choses
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Compter les bases de l'ADN est peut-être le "Hello, World !" de la bio-informatique. Le défi Rosalind DNA décrit un programme qui prend une séquence d'ADN et imprime un décompte du nombre d'As, de C, de Get de Tqui s'y trouvent. Il y a étonnamment de nombreuses façons de compter des choses en Python, et je vais explorer ce que le langage a à offrir. Je montrerai également comment écrire un programme bien structuré et documenté qui valide ses arguments, ainsi que comment écrire et exécuter des tests pour s'assurer que le programme fonctionne correctement.
Dans ce chapitre, tu apprendras :
-
Comment démarrer un nouveau programme en utilisant
new.py -
Comment définir et valider les arguments de la ligne de commande en utilisant
argparse -
Comment exécuter une suite de tests à l'aide de
pytest -
Comment itérer les caractères d'une chaîne de caractères ?
-
Façons de compter les éléments d'une collection
-
Comment créer un arbre de décision en utilisant les déclarations
if/elif? -
Comment formater les chaînes de caractères
Pour commencer
Avant de commencer, assure-toi d'avoir lu "Obtenir le code et les tests" dans la préface. Une fois que tu as une copie locale du dépôt de code, va dans le répertoire 01_dna:
$ cd 01_dna
Tu trouveras ici plusieurs programmes solution*.py ainsi que des tests ...
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