: For boto3 , ensure your AWS credentials are configured in ~/.aws/credentials or via environment variables.
Below is a comprehensive guide to downloading S3 files from a URL using the requests library and the official AWS SDK, boto3 . 1. Download from a Public URL python download s3 file from url
import boto3 s3 = boto3.client('s3') # Standard S3 Download s3.download_file( Bucket='my-bucket-name', Key='folder/my-file.zip', Filename='local-copy.zip' ) Use code with caution. Method: get_object (Download to Memory) : For boto3 , ensure your AWS credentials
How to Download S3 Files from a URL Using Python Downloading files from Amazon S3 is a common task, but the "best" method depends entirely on the type of URL you have. Whether you are dealing with a public link, a secure presigned URL, or an internal S3 URI, Python provides several ways to handle the job. Download from a Public URL import boto3 s3 = boto3
import requests def download_public_s3_file(url, local_filename): try: response = requests.get(url, stream=True) response.raise_for_status() # Check for HTTP errors with open(local_filename, 'wb') as f: for chunk in response.iter_content(chunk_size=8192): f.write(chunk) print(f"File downloaded successfully to {local_filename}") except requests.exceptions.RequestException as e: print(f"Download failed: {e}") # Example Public URL url = "https://amazonaws.com" download_public_s3_file(url, "downloaded_image.png") Use code with caution. 2. Download from a Presigned URL
If you need to generate the URL first, use boto3 . If you already have the URL, skip to the requests part.
import boto3 import requests from botocore.exceptions import ClientError # 1. Generate the URL (Requires AWS Credentials) def create_presigned_url(bucket_name, object_name, expiration=3600): s3_client = boto3.client('s3') try: url = s3_client.generate_presigned_url( 'get_object', Params={'Bucket': bucket_name, 'Key': object_name}, ExpiresIn=expiration ) return url except ClientError as e: print(f"Error: {e}") return None # 2. Download using the URL (No AWS Credentials needed for this step) presigned_url = create_presigned_url("my-private-bucket", "data.csv") if presigned_url: response = requests.get(presigned_url) with open("data.csv", "wb") as f: f.write(response.content) Use code with caution. 3. Download from an S3 URI (Internal Path)