A lightweight, core Python script that uploads files to Amazon S3 buckets using a reusable S3Uploader class and a simple CLI—no frameworks required.

Python S3 File Uploader is a minimal yet powerful script for uploading files to Amazon S3 using only core Python and boto3. It features a modular S3Uploader class (s3_uploader.py) and a command-line interface (upload_file_cli.py) for selecting files and uploading them to any configured S3 bucket. The script supports automatic MIME type detection, handles AWS credential errors gracefully, and allows for public file uploads. This reusable component is ideal for automation, scripting, and quick file transfers without the overhead of a full framework.

1. Install the required dependency:
   pip install boto3

2. Configure AWS credentials:

   aws configure
export AWS_ACCESS_KEY_ID=your_access_key
export AWS_SECRET_ACCESS_KEY=your_secret_key
export AWS_REGION=your_region

3. Run the CLI script:
   python upload_file_cli.py

4. When prompted, enter the full file path to upload.

Python S3 File Uploader (Core Python)

A simple, reusable script to upload files to an Amazon S3 bucket using core Python — no frameworks required.

Features

• Lightweight and dependency-minimal
• Uploads files to any AWS S3 bucket
• Reusable S3Uploader class
• Supports all file types
• Handles AWS credential errors gracefully

Setup

1. Install dependencies

pip install boto3

aws configure
export AWS_ACCESS_KEY_ID=your_access_key
export AWS_SECRET_ACCESS_KEY=your_secret_key
export AWS_REGION=your_region