Python 3.x 如何将不同的输入存储在单个变量中并打印出来？

到目前为止，代码可以正常工作并要求我提供所需的一切，但它一直在输出最后的输入，而不是最后的全部3个输入。我知道为什么，但不知道如何修复。谢谢你的帮助

我试过做3个不同的功能，但只是把它弄得一团糟，无法让它工作

class RetailItem:

    def __items__(s,d,p):
            return s,d,p
    def main():
        for x in range (3):
            s = input("What is item name: ")
            d = int(input("How many of these items are in stock? "))
            p = float(input("How much is each unit price? "))
        for __items__ in range(3):
            print("Description:", s)
            print("Units:", d)
            print("Price:", p)
    main()

所以现在代码就是这样做的

What is item name: 1
How many of these items are in stock? 1
How much is each unit price? 1
What is item name: 2
How many of these items are in stock? 2
How much is each unit price? 2
What is item name: 3
How many of these items are in stock? 3
How much is each unit price? 3
Description: 3
Units 3
Price 3.0
Description: 3
Units 3
Price 3.0
Description: 3
Units 3
Price 3.0

最后我想让它读出来

Description: 1
Units 1
Price 1
Description: 2
Units 2
Price 2
Description: 3
Units 3
Price 3

---

在循环的每次迭代中，您都覆盖了变量所持有的先前值

对于您的目标来说，这可能过于复杂，但您可以将字典作为数据结构嵌套在列表中

示例：

#initialize an empty list and dict
myList = []
myDict = {}
def main():
    for x in range (3):
        #each loop overrides the dict
        myDict["description"] = input("What is item name: ")
        myDict["units"] = int(input("How many of these items are in stock? "))
        myDict["price"] = float(input("How much is each unit price? "))
        #append a copy of dict to our list
        myList.append(myDict.copy())
    #loop through list and unpack values from dictionaries
    for item in myList:
        for key, value in item.items():
            print(key.capitalize() + ":" + str(value))

main()

What is item name: 1
How many of these items are in stock? 1
How much is each unit price? 1
What is item name: 2
How many of these items are in stock? 2
How much is each unit price? 2
What is item name: 3
How many of these items are in stock? 3
How much is each unit price? 3

Description:1
Units:1
Price:1.0
Description:2
Units:2
Price:2.0
Description:3
Units:3
Price:3.0

输入：

#initialize an empty list and dict
myList = []
myDict = {}
def main():
    for x in range (3):
        #each loop overrides the dict
        myDict["description"] = input("What is item name: ")
        myDict["units"] = int(input("How many of these items are in stock? "))
        myDict["price"] = float(input("How much is each unit price? "))
        #append a copy of dict to our list
        myList.append(myDict.copy())
    #loop through list and unpack values from dictionaries
    for item in myList:
        for key, value in item.items():
            print(key.capitalize() + ":" + str(value))

main()

What is item name: 1
How many of these items are in stock? 1
How much is each unit price? 1
What is item name: 2
How many of these items are in stock? 2
How much is each unit price? 2
What is item name: 3
How many of these items are in stock? 3
How much is each unit price? 3

Description:1
Units:1
Price:1.0
Description:2
Units:2
Price:2.0
Description:3
Units:3
Price:3.0

输出：

#initialize an empty list and dict
myList = []
myDict = {}
def main():
    for x in range (3):
        #each loop overrides the dict
        myDict["description"] = input("What is item name: ")
        myDict["units"] = int(input("How many of these items are in stock? "))
        myDict["price"] = float(input("How much is each unit price? "))
        #append a copy of dict to our list
        myList.append(myDict.copy())
    #loop through list and unpack values from dictionaries
    for item in myList:
        for key, value in item.items():
            print(key.capitalize() + ":" + str(value))

main()

What is item name: 1
How many of these items are in stock? 1
How much is each unit price? 1
What is item name: 2
How many of these items are in stock? 2
How much is each unit price? 2
What is item name: 3
How many of these items are in stock? 3
How much is each unit price? 3

Description:1
Units:1
Price:1.0
Description:2
Units:2
Price:2.0
Description:3
Units:3
Price:3.0

也许有一种更简单的方法来完成你想做的事情，但这样你就可以跟踪输入，祝你好运

s,d,p = [],[],[]
for x in range(3):
        s.append(input("What is item name: "))
        d.append(int(input("How many of these items are in stock? ")))
        p.append(float(input("How much is each unit price? ")))
for i in range(3):
        print("Description:", s[i])
        print("Units:", d[i])
        print("Price:", p[i])

另一种可能是创建一个数组：

array=[]、[]、[]
对于范围（3）内的x：
数组[0]。追加（输入（“项目名称：”））
数组[1]。追加（int（输入（“这些项目中有多少有库存？”））
数组[2]。追加（float（输入（“每个单价是多少？”））
对于范围（3）中的i：
打印（“说明：”，数组[0][i]）
打印（“单位：”，数组[1][i]）
打印（“价格：，数组[2][i]）

在循环中，您输入的每一项（最后一项除外）都会被替换，因为您每次都存储到同一个变量。这看起来很奇怪：

对于范围（3）中的项目：