选择yes后，如何让程序再次运行？

Question

我正在尝试让程序运行，直到用户不键入"No“。下面是我已经完成的代码：

print("What language would you prefer?\n e for English, s for spanish, f for french")

choice= input("Your choice\n")

english= "Hello iso-3166-2: en-us"
french= "Salut! iso-3166-2:fr"
spanish= "Ola iso-3166-2:es"

if choice == "e":
    print (english)
elif choice == "f":
    print (french)
elif choice == "s":
    print (spanish) 

while True:
    res= input("Do you want to choose another language? Yes/No:")
    if res == "No":
        break

Answer 1

english= "Hello iso-3166-2: en-us"
french= "Salut! iso-3166-2:fr"
spanish= "Ola iso-3166-2:es"

print("What language would you prefer?\n e for English, s for spanish, f for french")

choice = input("Your choice\n")

while True:
    if choice == "e":
        print(english)
    elif choice == "f":
        print(french)
    elif choice == "s":
        print(spanish)
    res = input("Do you want to choose another language? Yes/No:")
    if res == 'Yes':
        print("What language would you prefer?\n e for English, s for spanish, f for french")
        choice = input("Your choice\n")
    elif res == 'No':
        print ("Goodbye")
        break

输出：

What language would you prefer?
 e for English, s for spanish, f for french
Your choice
e
Hello iso-3166-2: en-us
Do you want to choose another language? Yes/No:Yes
What language would you prefer?
 e for English, s for spanish, f for french
Your choice
f
Salut! iso-3166-2:fr
Do you want to choose another language? Yes/No:No
Goodbye

Answer 2

您应该首先导入sys库，然后将其余代码放入While True循环中。在代码的末尾编写：

Answer = input ("Do you want to continue? (y/n)")
If Answer == 'n' :
    sys.exit

请注意，上面的代码是while true循环中的最后一段代码。