在文本文件Python中搜索特定的单词

Question

我一直在创建一个程序，用于对从python到文本文件的书籍进行分类和查找。 首先，它为您提供了所有书籍的清单（我将在以后按字母顺序对它们进行排序），然后询问您是否要添加任何书籍，然后将标题和作者添加到文本文件中。 但是，我的问题是，此后我应该选择搜索书籍或作者，然后输入书籍名称或作者，它应该搜索文本文件并打印出每行中包含关键字的关键词。输入它。

我查看了多个论坛和教程，以了解如何执行此操作，但似乎都没有用。

到目前为止，我的代码：

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

如果您想用搜索输入打印出每一行，则可以执行。

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)

当您写入文件时：

更换：

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")

这可以帮助归还由特定作者撰写的所有书籍。