Question

我将文本文件作为多维数组拉入，并让用户选择其中一个项目并将其存储在另一个数组中。我试图找出如何使用第二个元素找到第一个数组的索引。

代码：

+-------+--------+------+----------+
| sale# | SaleID | POID | Received |
+-------+--------+------+----------+
| GHI   |      3 |    4 | True     |
| GHI   |      3 |    5 | True     |
| GHI   |      3 |    5 | True     |
+-------+--------+------+----------+

文字档案：

import {CollapsePanelProps as OriginalCollapsePanelProps} from 'antd/Collapse';

export interface CollapsePanelProps extends OriginalCollapsePanelProps {
  showArrow?: boolean;
}

我试过了

with open("books.txt") as b:
    books = b.readlines()[7:]

books = [x.strip() for x in books]
books = [x.split(",") for x in books]

def welcome():
    print("Welcome to the Bookstore")
    global name
    name = input("What is your name? ")
    print("Our current list of books are: ")
    inventory()

def choice():
    select = input("Which books would you like? (ID):\n")
    global chosen
    chosen = []
    flag = "y"

    while flag == "y":
        chosen.append(select)

        flag = input("Would you like to add more books to your cart? (y/n): ")
    print(chosen)

    for chosen in books:
        books.index(chosen[0])

def inventory():
    length = len(books)
    for i in range(length):
        print(books[i][0], books[i][1].strip(), ("$" + books[i][2]).replace(" ", ""))
    choice()

def receipt():
    print("Thank you", name)

welcome()

如果我选择To add books to your store please have a new book on each line, and use the format ItemNumber,BookName,BookPrice an example would be as follows: B142, Prelude to Programing, 5.25 Please start entering books under the heading Books Available. Thank You Books Available: B12, Prelude to Programing, 5.25 B13, Lazy Python, 10.25 B14, Coding for Dummys, 19.25，我希望结果为for chosen in books: books.index(chosen[0]) B12索引号。

Answer 1

的问题：

您正在chosen行覆盖for chosen in books:。
循环提示输入更多图书只会在输入y时附加最后选择的图书ID。
我的编辑器中的select字作为模块select存在。您可能想要更改名称。

用此更改替换choice（）。

def choice():
    global chosen
    chosen = []

    while True:
        select = input("Which books would you like? (ID):\n")
        chosen.append(select)

        flag = input("Would you like to add more books to your cart? (y/n): ")
        if flag != 'y':
            break
    print(chosen)

    index = []
    for item in chosen:
        for idx, book in enumerate(books):
            if item == book[0]:
                index.append([idx, 0])

    print('index:', index)

索引列表包含ie [[2, 0], ...]

2是在书中找到书的索引。 0是书id的索引。如果结果不完全符合您的要求，您可以进行所需的任何更改。

存储图书ID意味着稍后搜索。你可以存储书的索引。

即

def choice():
    global chosen
    chosen = []

    while True:
        select = input("Which books would you like? (ID):\n")
        # Get the index of the selected book in books.
        for idx, book in enumerate(books):
            if select == book[0]:
                chosen.append(idx)
                break

        flag = input("Would you like to add more books to your cart? (y/n): ")
        if flag != 'y':
            break
    print(chosen)

    # [[0, 0], ...]
    result = [[idx, 0] for idx in chosen]
    print(result)

此函数存储所选书籍的索引而不是书籍ID的ID，因为稍后使用索引会更方便，因为列表理解的使用最后会显示。

使用另一个数组搜索数组

1 个答案: