Uploading and downloading objects in AWS - Mini Project: Build & Apply

Uploading and downloading objects

📖 Scenario: You are working with Amazon S3, a cloud storage service. You want to upload a file to a bucket and then download it back to your local machine.

🎯 Goal: Build a simple script that uploads a file named example.txt to an S3 bucket called my-test-bucket and then downloads it back as downloaded_example.txt.

📋 What You'll Learn

Use the AWS SDK for Python (boto3).

Create a variable for the bucket name my_test_bucket with value 'my-test-bucket'.

Upload the file example.txt to the bucket with the key example.txt.

Download the file from the bucket with the key example.txt and save it locally as downloaded_example.txt.

💡 Why This Matters

🌍 Real World

Uploading and downloading files to cloud storage is common for backups, sharing data, and hosting content.

💼 Career

Cloud engineers and developers often automate file transfers to and from cloud storage services like Amazon S3.

1

Set up AWS S3 client

Import the boto3 library and create an S3 client called s3_client.

AWS

# Import boto3 and create s3_client
# Your code here

Need a hint?

Use import boto3 and then boto3.client('s3') to create the client.

2

Create bucket name variable

Create a variable called my_test_bucket and set it to the string 'my-test-bucket'.

AWS

import boto3
s3_client = boto3.client('s3')
# Create bucket name variable
# Your code here

Need a hint?

Use a simple assignment like my_test_bucket = 'my-test-bucket'.

3

Upload the file to S3

Use s3_client.upload_file to upload the local file 'example.txt' to the bucket my_test_bucket with the key 'example.txt'.

AWS

import boto3
s3_client = boto3.client('s3')
my_test_bucket = 'my-test-bucket'
# Upload example.txt to S3 bucket
# Your code here

Need a hint?

Call s3_client.upload_file('example.txt', my_test_bucket, 'example.txt') to upload.

4

Download the file from S3

Use s3_client.download_file to download the file with key 'example.txt' from the bucket my_test_bucket and save it locally as 'downloaded_example.txt'.

AWS

import boto3
s3_client = boto3.client('s3')
my_test_bucket = 'my-test-bucket'
s3_client.upload_file('example.txt', my_test_bucket, 'example.txt')
# Download example.txt from S3 bucket
# Your code here

Need a hint?

Call s3_client.download_file(my_test_bucket, 'example.txt', 'downloaded_example.txt') to download.