使用Boto3从s3下载文件子集

pip install boto3

import boto3
import botocore

s3_client = boto3.client('s3')

bucket_name = 'your_bucket_name'
file_key = 'your_file_key'

response = s3_client.head_object(Bucket=bucket_name, Key=file_key)
file_size = response['ContentLength']

range_start = 0
range_end = 999
range_header = f"bytes={range_start}-{range_end}"

response = s3_client.get_object(Bucket=bucket_name, Key=file_key, Range=range_header)

with open('downloaded_file', 'wb') as f:
    f.write(response['Body'].read())