Exemple d'une boucle for avec une clause else

ex_loop_with_else.py

noble_gaz = [
    {"name": "HELIUM", "symbol": "He", "atomic number": 2},
    {"name": "NEON", "symbol": "Ne", "atomic number": 10},
    {"name": "ARGON", "symbol": "Ar", "atomic number": 18},
    {"name": "KRYPTON", "symbol": "Kr", "atomic number": 36},
    {"name": "XENON", "symbol": "Xe", "atomic number": 54},
    {"name": "RADON", "symbol": "Rn", "atomic number": 86},
]

symbol = input("Entrer le symbole d'un gaz noble: ")

for gaz in noble_gaz:
    if gaz["symbol"] == symbol:
        print(
            f"Vous avez entré le symbole de {gaz['name']} dont le numéro atomique est {gaz['atomic number']}"
        )
        break
else:
    print(
        f"Le symbole {symbol} que vous avez saisi ne semble pas correspondre à un gaz rare"
    )