Question

我想显示用户在列表中验证后输入的品牌的型号。当我将car_model_choice函数放在car_brand_choice之外时，它会显示模型，但无论用户选择如何，它都会显示模型。

由于所需的变量（选择）是局部变量，因此无法在其他任何地方使用，但它是显示正确模型所需的。我尝试在car_brand_choice结束时使用return但结束了程序。

我还想过，矩阵可能会有所帮助，但不确定这是如何工作的，因为每个品牌会有多个型号。

我还会根据需要提供更多代码。

如果这个问题重复，我会提前道歉，但我无法在任何地方找到它。

def car_brand_choice(): 
    time.sleep(1.5)
    print "These are the car brands I can provide to you.\n"
    print "\n".join(car_brands)
    selection = raw_input("\nNow is your chance to pick which brand you want. ").title()
    print "You selected %s \n" %selection
    print "I have to verify your selection is valid.\n"
    time.sleep(10)
    if selection in car_brands:
        print "Valid selection. You may continue.\n"
        #Display brand models after verification
        car_model_choice()

else:
    print "Not valid selection."
    print "Go back and select a valid brand.\n"
    car_brand_choice()

def car_model_choice():
    print "Select your model."
    selection = "\n".join(kia_car)
    print selection

Answer 1

使用每种型号的价格进行编辑。不确定我有你的ideia /问题，但你可以有一个品牌词典=＆gt;模型，并将品牌作为模型选择的参数：

car_dict = {'brand1': ['brand1_model1', 'brand1_model2'], 
            'brand2': ['brand2_model1', 'brand2_model2'], 
            'brand3': ['brand3_model1', 'brand3_model2']}

有不同的方法，但这里有一个想法：

price_dict = {'brand1_model1' => 20000, 'brand1_model2' => 22000,
              'brand2_model1' => 18000, 'brand2_model2' => 21000,
              'brand3_model1' => 19000, 'brand3_model2' => 24000}

然后，

def car_brand_choice(): 
    time.sleep(1.5)
    car_brands = car_dict.keys()
    print "These are the car brands I can provide to you.\n"
    print "\n".join(car_brands) # Show brands options
    selection = raw_input("\nNow is your chance to pick which brand you want. ").title()
    print "You selected %s \n" %selection
    print "I have to verify your selection is valid.\n"
    time.sleep(10)
    selection = selection.lower()
    if selection in car_brands:
        print "Valid selection. You may continue.\n"
        #Display brand models after verification
        car_model_choice(selection)
    else:
        print "Not valid selection."
        print "Go back and select a valid brand.\n"
        car_brand_choice()

def car_model_choice(brand):
   print "Select your model."
   for model in car_dict[brand]: # Show model options
       print model
   model_selection = raw_input("\nNow is your chance to pick which model you want. ").title()
   print "You selected a " + brand + " model " + model_selection + " by " + str(price_dict[model_selection])

根据用户选择，展示品牌型号python

1 个答案: