Python Flask and Backend

As you move deeper into web development, understanding backend development becomes essential. Flask is a lightweight web framework that allows you to build powerful backend applications in Python. It enables routing, templating, and integration with databases.

Crash Course

  • Key files
  • Minimal server
  • JavaScript fetch

FE to BE

Define in a single Jupyter Notebook that contains a Python Flask minimal application that can respond to JavaScript cells that use fetch to post and get data. Included are outputs that show server running, inputs from user, and outputs from server.

Anatomy

  • System files
  • API files
  • Model files

App Structure

Flask anatomy covers the essential components of a Flask application, including how to set up routes, handle requests, and serve responses. Understanding the structure of a Flask app is crucial for building efficient backend services.

API creation

  • Create API routes
  • Fetch data from frontend
  • Manage server responses and JSON

Full API Creation

Flask anatomy covers the essential components of a Flask application, including how to set up routes, handle requests, and serve responses. Understanding the structure of a Flask app is crucial for building efficient backend services.

Jinja UI

  • Display backend data
  • Create admin dashboards
  • Improve accessibility for Admins

Interface for Admins

Backend UIs present data from your database or APIs in a visual format. These dashboards help developers and admins manage, monitor, and debug application content and behavior.

Why Flask and Backend Matter

Flask gives you the essentials to get started, allowing you to add only the backend features you need (it’s lightweight)—such as API request handling. It’s beginner-friendly, widely used in the industry, and perfect for learning how the backend of a website works. With Flask, you’ll quickly go from writing simple scripts to powering dynamic, data-driven web apps.