在文本文件Python中搜索特定的單詞

Question

我一直在創建一個程序，用於對從python到文本文件的書籍進行分類和查找。 首先，它為您提供了所有書籍的清單（我將在以后按字母順序對它們進行排序），然后詢問您是否要添加任何書籍，然后將標題和作者添加到文本文件中。 但是，我的問題是，此后我應該選擇搜索書籍或作者，然后輸入書籍名稱或作者，它應該搜索文本文件並打印出每行中包含關鍵字的關鍵詞。輸入它。

我查看了多個論壇和教程，以了解如何執行此操作，但似乎都沒有用。

到目前為止，我的代碼：

import time
import random

x = 2

file = open("bookList.txt", "r")
print(file.read())
file.close()

addBookYorN = input("Do you want to add a book to the list? \n")

if addBookYorN in ["Y", "y", "Yes", "yes"]:

while x > 1:
    addBookName = input("Book: ")
    addBookAuthor = input("Author: ")

    file = open("bookList.txt", "a")
    file.write(addBookName + " - ")
    file.write(addBookAuthor + "\n")
    file.close()

    stahp = input("Do you want to add another book? \n")

    if stahp in ["No", "no", "N", "n"]:
        x = x - 1

elif addBookYorN in ["N", "n", "No", "no"]:
    print("Okay")

bookSearchYorN = input("Do you want to find a book or author? \n")

if bookSearchYorN in ["Y", "y", "Yes", "yes"]:
    file = open("bookList.txt", "r")
    bookSearch = input("What book or author are you looking for? \n")

Answer 1

如果您想用搜索輸入打印出每一行，則可以執行。

bookSearch = input("What book or author are you looking for? \n")
with open("bookList.txt", r) as infile:
    for line in infile.readlines():
        if bookSearch in line:
            print(line)

當您寫入文件時：

更換：

file = open("bookList.txt", "a")
file.write(addBookName + " - ")
file.write(addBookAuthor + "\n")
file.close()

同

with open("bookList.txt", "a") as infile:
    infile.write(addBookName + " - " + addBookAuthor + "\n")

這可以幫助歸還由特定作者撰寫的所有書籍。