adn.py

Created by schraf

Created on September 07, 2018

185 Bytes

Écrire une fonction “adn” qui admet en paramètre une chaine de caractères et renvoie “Brin ADN” si les caractères sont uniquement des A, T, C et G ou “Pas ADN” si d’autres lettres sont présentes.

def adn(brin):
  for c in brin:
      if c not in "ATCG":
          return "Pas ADN"
  return "Brin ADN"
  
# Ex : adn("ACGTAGTG") -> Brin ADN
# Ex : adn("AGTXAT") -> Pas ADN

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