python - 如何从字典中找到输入的值

Question

我为一个学校项目编写了这段代码，它是这样的：

valid_entries = ['y', 'n', 'hatchback', 'estate', 'saloon']
model_options = {
    'Hatchback' : 535000,
    'Saloon' : 495000,
    'Estate' : 625000
}
total_price = 0

model_chosen = input("Which car model do you want to buy?\n> ")
while model_chosen not in valid_entries:
    print("Invalid Input\nTry again")
    model_chosen = input("Which car model do you want to buy?\n> ")

有没有办法我可以访问这些值并将其与输入进行比较并将其添加到分数中？

Answer 1

值为model_options[model_chosen]，你到底想做什么？你能做到吗：total += model_options[model_chosen]。

Answer 2

您可以使用以下语法访问该值：dict[key]。例如，在您的代码中，models_options[Estate] 的值为 625000。您实际上并不需要列表 valid_entries。你可以试试下面的代码：

valid_entries = ['y', 'n', 'hatchback', 'estate', 'saloon']
model_options = {
    'Hatchback' : 535000,
    'Saloon' : 495000,
    'Estate' : 625000
}
total_price = 0

model_chosen = input("Which car model do you want to buy?\n> ")
while model_chosen not in model_options:
    print("Invalid Input\nTry again")
    model_chosen = input("Which car model do you want to buy?\n> ")

total_price+=model_options[model_chosen]

print(total_price)