Deploying Your Flask Application to Production: A Step-by-Step Guide

Flask is a lightweight Python web framework suitable for rapidly developing small to medium web applications. This article will detail how to deploy a Flask application into a production environment.

Before You Start

Before deploying your Flask application, make sure you have the following:

• A thoroughly tested Flask application.
• Basic server knowledge, including SSH connections to remote servers.
• An accessible server, Ubuntu or another Linux distribution.
• Root or sudo privileges on the server.

Preparing the Deployment Environment

1. Update the Server

sudo apt update
sudo apt upgrade

2. Install Dependencies

Flask typically requires Werkzeug as a WSGI utility and the corresponding version of Python. The following commands install Python 3 and pip on Ubuntu.

sudo apt install python3 python3-pip

3. Set Up Virtual Environment

The virtual environment is a Python feature that keeps the project’s dependencies independent from the global Python environment.

sudo apt install python3-venv
python3 -m venv myprojectenv
source myprojectenv/bin/activate