https://github.com/gsaini/python-flask-getting-started

Flask is a lightweight, flexible, and popular Python microframework for building web applications, known for its simplicity and ease of use, allowing developers to focus on application logic rather than infrastructure.
https://github.com/gsaini/python-flask-getting-started

browser-web-api flask html5 javascript postgresql python server-sent-events

Last synced: 23 days ago
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Flask is a lightweight, flexible, and popular Python microframework for building web applications, known for its simplicity and ease of use, allowing developers to focus on application logic rather than infrastructure.

• Host: GitHub
• URL: https://github.com/gsaini/python-flask-getting-started
• Owner: gsaini
• Created: 2025-04-06T17:12:45.000Z (over 1 year ago)
• Default Branch: main
• Last Pushed: 2025-04-24T00:20:49.000Z (about 1 year ago)
• Last Synced: 2026-06-14T23:34:32.132Z (23 days ago)
• Topics: browser-web-api, flask, html5, javascript, postgresql, python, server-sent-events
• Language: Python
• Homepage:
• Size: 23.4 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# python-flask-getting-started

[![codecov](https://codecov.io/gh/gsaini/python-flask-getting-started/graph/badge.svg?token=VGBPGOC9JE)](https://codecov.io/gh/gsaini/python-flask-getting-started)

![Python](https://img.shields.io/badge/python-3670A0?style=for-the-badge&logo=python&logoColor=ffdd54)

![Flask](https://img.shields.io/badge/flask-%23000.svg?style=for-the-badge&logo=flask&logoColor=white)

![HTML5](https://img.shields.io/badge/html5-%23E34F26.svg?style=for-the-badge&logo=html5&logoColor=white)

![JavaScript](https://img.shields.io/badge/javascript-%23323330.svg?style=for-the-badge&logo=javascript&logoColor=%23F7DF1E)

![GitHub Actions](https://img.shields.io/badge/github%20actions-%232671E5.svg?style=for-the-badge&logo=githubactions&logoColor=white)

![CodeCov](https://img.shields.io/badge/codecov-%23ff0077.svg?style=for-the-badge&logo=codecov&logoColor=white)

[Flask](https://flask.palletsprojects.com/en/stable/) is a lightweight, flexible, and popular Python microframework for building web applications, known for its simplicity and ease of use, allowing developers to focus on application logic rather than infrastructure. 

## PostgreSQL: The World's Most Advanced Open Source Relational Database

PostgreSQL is a powerful, open source object-relational database system with over 35 years of active development that has earned it a strong reputation for reliability, feature robustness, and performance.

## Server-Sent Events (SSE)

Server-Sent Events (SSE) provide a simple way to push updates from a server to a browser (client) over HTTP. SSE is unidirectional, meaning data flows only from the server to the client, and it is natively supported in browsers via the `EventSource` API.

### Use Cases for SSE

SSE is ideal for scenarios such as:

- Live notifications

- Stock price updates

- News feeds

- Chat messages (read-only streams)

### 📦 Key Characteristics of SSE

| **Feature**         | **Description**                     |

|----------------------|-------------------------------------|

| **Protocol**         | HTTP (not WebSocket)               |

| **Direction**        | Server → Client                    |

| **Reconnect Support**| Built-in automatic reconnects      |

| **Format**           | Text-based (`text/event-stream`)   |

| **Browser API**      | `EventSource`                      |

## Generate a Self-Signed SSL Certificate

Run the following in terminal (Python must be installed):

```

openssl req -x509 -newkey rsa:4096 -keyout key.pem -out cert.pem -days 365 -nodes

```

## How to Run

Run the Flask server:

```

python server.py

```