按行号获取文本

import os
from qcloud_cos import CosConfig
from qcloud_cos import CosS3Client

# 配置 COS 凭证信息
secret_id = 'your_secret_id'
secret_key = 'your_secret_key'
region = 'your_region'
token = None
config = CosConfig(Region=region, SecretId=secret_id, SecretKey=secret_key, Token=token)
client = CosS3Client(config)

# 按行号获取文本
def get_text_by_line(file_path, line_number):
    try:
        response = client.get_object(
            Bucket='your_bucket',
            Key=file_path
        )
        content = response['Body'].read().decode('utf-8')
        lines = content.split('\n')
        if line_number <= len(lines):
            return lines[line_number - 1]
        else:
            return "Line number out of range."
    except Exception as e:
        return str(e)

# 示例调用
file_path = 'your_file_path'
line_number = 5
result = get_text_by_line(file_path, line_number)
print(result)