Vérifier un élément dans une liste

Bonjour,

merci jee pee pour les conseils et les corrections. C'est mon premier post et déjà j'avais du mal à mettre une image .. bon,,,

Au final j'ai réussi à faire fonctionner mon code, j'ai demandé à un ami de m'aider. J'ai tendance à trop utiliser une boucle while.

Merci pour la réponse rapide ! 

while True:
    try:
        choice_customer = int(input())
        if choice_list.count(choice_customer) > 0 :
            break
        elif choice_list.count(choice_customer) <= 0 :
            print("Please enter a valid number : ")
        
    except ValueError:
        print("Please enter a valid number : ")

Bonjour mamiemando,

mon code pour insérer un nouvel article ressemble à ça, comme je suis encore débutant je n'utilise que les fonctions de base que je comprends. 

choice_number = 0
choice_list = []
#Pink Hair Doll
choice_number += 1
choice_list.append(choice_number)
PHD_number = choice_number
PHD_price_hour = 5000.00
PHD_description = """
Pink Hair Doll, PHD for short. It does not grant you the Doctor title but you can make it a doctor. You can play with its hair and undress it anywhere. """
#Black Hellish chains
choice_number += 1
choice_list.append(choice_number)
BHC_number = choice_number
BHC_price_hour = 3000.00
BHC_description = """
Black Hellish Chains, BHC for short. They burn so much that it can't be used to chain things up. Plastic gloves recommended.  """
#White Stout Cat
choice_number += 1
choice_list.append(choice_number)
WSC_number = choice_number
WSC_price_hour = 3500.00
WSC_description = """
White Stout Cat, WSC for short. Its way to defend your home makes it the perfect ferocious guard."""
#Print the choices
print("""
EEEEE    OOO    RRRR    ZZZZZ   EEEEE     A  
E       O   O   R   R       Z   E        A A 
E       O   O   R   R      Z    E       A   A
EEE     O   O   RRRR      Z     EEE     AAAAA
E       O   O   R R      Z      E       A   A
E       O   O   R  R    Z       E       A   A
EEEEE    OOO    R   R   ZZZZZ   EEEEE   A   A

______________________________________________
""")

print(f"""
Hello and Welcome to Eorzea ! Choose your item and enjoy.  
>> {PHD_number}. {PHD_description}
PRICE PER 1 HOUR ---- {PHD_price_hour}
>> {BHC_number}. {BHC_description}
PRICE PER 1 HOUR ---- {BHC_price_hour}
>> {WSC_number}. {WSC_description}
PRICE PER 1 HOUR ---- {WSC_price_hour}
""")
#Get the choices
print("______________________________________________\nWhich one will you choose ? Type the corresponding number : ")
while True:
    try:
        choice_customer = int(input())
        if choice_list.count(choice_customer) > 0 :
            break
        elif choice_list.count(choice_customer) <= 0 :
            print("Please enter a valid number : ")
        
    except ValueError:
        print("Please enter a valid number : ")

print("For how many hours ? : ")
while True:
    try:
        hour_customer = int(input())
    except ValueError:
        print("Please enter a valid number of hour (integer) : ")

Est-ce que c'est possible de le raccourcir pour mon niveau ?

Merci d'avance