从文本文件中获取特定行

with open('file.txt', 'r') as f:
    lines = f.readlines()
    target_line = lines[5]  # 获取第6行

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;

public class Main {
    public static void main(String[] args) {
        try (BufferedReader br = new BufferedReader(new FileReader("file.txt"))) {
            String line;
            int targetLineNumber = 5;
            int currentLineNumber = 0;
            while ((line = br.readLine()) != null) {
                currentLineNumber++;
                if (currentLineNumber == targetLineNumber) {
                    System.out.println(line);
                    break;
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

const fs = require('fs');

fs.readFile('file.txt', 'utf8', (err, data) => {
    if (err) throw err;
    const lines = data.split('\n');
    const targetLine = lines[5];  // 获取第6行
    console.log(targetLine);
});

using System;
using System.IO;

class Program {
    static void Main() {
        string[] lines = File.ReadAllLines("file.txt");
        string targetLine = lines[5];  // 获取第6行
        Console.WriteLine(targetLine);
    }
}

$lines = file('file.txt', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
$targetLine = $lines[5];  // 获取第6行
echo $targetLine;

File.open('file.txt', 'r') do |f|
  target_line = f.each_line.with_index(1).find { |line, index| index == 6 }.first  # 获取第6行
  puts target_line
end

package main

import (
    "bufio"
    "fmt"
    "os"
)

func main() {
    file, err := os.Open("file.txt")
    if err != nil {
        panic(err)
    }
    defer file.Close()

    scanner := bufio.NewScanner(file)
    targetLineNumber := 5
    currentLineNumber := 0
    for scanner.Scan() {
        currentLineNumber++
        if currentLineNumber == targetLineNumber {
            fmt.Println(scanner.Text())
            break
        }
    }
}