示例代码:
import json
import boto3
def lambda_handler(event, context):
s3 = boto3.client('s3')
for record in event['Records']:
bucket_name = record['s3']['bucket']['name']
object_key = record['s3']['object']['key']
object_size = record['s3']['object']['size']
print(f'Object "{object_key}" of size {object_size} bytes in bucket "{bucket_name}" has been downloaded.')
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