如何获取脚本以读取文件、接受用户输入并显示用户输入中的特定行

Question

我正在尝试编写此代码，以便询问用户要搜索的行，然后他们输入它，然后显示用户想要的行。

    import os

    f = open("input_file_lab_1.txt","r")
    allData = f.read()#3

    cleanedData = allData.split("\n")
    name = input("enter line to search\n").strip()
   
    n = 0
    while n == 0:
    for line in range(len(cleanedData)): 
        if name in cleanedData[line]: 
            print(name) 
            n = 1
        else:
            pass
    
    f.close()

不知道有没有更简单的方法。 我也不断收到错误

  File "os1.py", line 7, in <module>

  name = input("enter line to search\n").strip()#5

AttributeError: 'int' object has no attribute 'strip'

Answer 1

您可以使用此代码段：

import os

with open("input.txt","r") as f:
    name = input("enter line to search\n").strip()
    for line in f:
        if name in line:
            print(line)
            break

编辑：如@alec_djinn 建议的那样使用with statement而不是f.open()/close()

Answer 2

你可能想试试 python 的标准库

https://docs.python.org/3/library/linecache.html#module-linecache

import linecache
lineNumber = input("enter line to search\n").strip()
line = linecache.getline(fileName, lineNumber)
print(line)