Python：如何在python的列表列表中添加列表？

Question

我正在学习python，所以这个问题可能是一个简单的问题，我在下面的列表中创建了汽车及其详细信息的列表：

car_specs = [("1. Ford Fiesta - Studio", ["3", "54mpg", "Manual", "£9,995"]),
             ("2. Ford Focous - Studio", ["5", "48mpg", "Manual", "£17,295"]),
             ("3. Vauxhall Corsa STING", ["3", "53mpg", "Manual", "£8,995"]),
             ("4. VW Golf - S", ["5", "88mpg", "Manual", "£17,175"])
            ]

然后，我创建了一个零件来添加另一辆车，如下所示：

new_name = input("What is the name of the new car?")
new_doors = input("How many doors does it have?")
new_efficency = input("What is the fuel efficency of the new car?")
new_gearbox = input("What type of gearbox?")
new_price = input("How much does the new car cost?")
car_specs.insert(len(car_specs), (new_name[new_doors, new_efficency, new_gearbox, new_price]))

它不起作用，但出现此错误：

Would you like to add a new car?(Y/N)Y
What is the name of the new car?test
How many doors does it have?123456
What is the fuel efficency of the new car?23456
What type of gearbox?234567
How much does the new car cost?234567
Traceback (most recent call last):
  File "/Users/JagoStrong-Wright/Documents/School Work/Computer Science/car list.py", line 35, in <module>
    car_specs.insert(len(car_specs), (new_name[new_doors, new_efficency, new_gearbox, new_price]))
TypeError: string indices must be integers
>>> 

任何人的帮助将不胜感激，谢谢。

Answer 1

只需将元组附加到列表中，并确保将new_name与列表中的,分开：

new_name = input("What is the name of the new car?")
new_doors = input("How many doors does it have?")
new_efficency = input("What is the fuel efficency of the new car?")
new_gearbox = input("What type of gearbox?")
new_price = input("How much does the new car cost?")
car_specs.append(("{}. {}".format(len(car_specs) + 1,new_name),[new_doors, new_efficency, new_gearbox, new_price]))

我将使用字典来存储数据：

car_specs = {'2. Ford Focous - Studio': ['5', '48mpg', 'Manual', '\xc2\xa317,295'], '1. Ford Fiesta - Studio': ['3', '54mpg', 'Manual', '\xc2\xa39,995'], '3. Vauxhall Corsa STING': ['3', '53mpg', 'Manual', '\xc2\xa38,995'], '4. VW Golf - S': ['5', '88mpg', 'Manual', '\xc2\xa317,175']}

然后使用以下方法添加新车：

car_specs["{}. {}".format(len(car_specs)+1,new_name)] = [new_doors, new_efficency, new_gearbox, new_price]

Answer 2

您没有设置第一个元素正确地进入元组。 您将按预期将名称附加在汽车规格的长度上。

同样，new_name也作为字符串，当您执行new_name [x]时，您会要求python输入该字符串中的第x + 1个字符。

new_name = input("What is the name of the new car?")
new_doors = input("How many doors does it have?")
new_efficency = input("What is the fuel efficency of the new car?")
new_gearbox = input("What type of gearbox?")
new_price = input("How much does the new car cost?")
car_specs.insert(str(len(car_specs + 1))+'. - ' + name, [new_doors, new_efficency, new_gearbox, new_price])