Intro To Flask

Introduction

Flask is a web framework for Python. It allows you to run Python code in a server hosted by your computer. It is famously used for developing web applications.

Resources Needed

• Python 3

Setting Up

Create an environment:

• Clone this repository (if you don't have git, you can also just donwload it as a ZIP file).

• Within the project folder (the one you just cloned/downloaded), create a venv (virtual environment) folder.

• macOS: python3 -m venv venv

• Windows: py -3 -m venv venv

Activate the environment (Why use a virtual environment? Because we want our project to use dependencies that either don't exist on your system, or exist but are of a different version. Using a virtual environment allows to install dependencies to be used exclusively for our project):

• macOS: . venv/bin/activate
• Windows: venv\Scripts\activate

Install Flask:

• macOS: pip install Flask (use pip3 if that's what you have)
• Windows: pip install Flask (use pip3 if that's what you have)

Workshop

This repository contains a skeleton for your Flask project. It has the appropiate directory and file structure for you to easily get started.

Take a look at the app.py file.

• This is the Flask application that will receive HTTP requests and return HTTP responses.
• It routes different endpoints (URLs) to different Python functions.

On the templates folder, there are HTML files that the prior mentioned Python functions can render (using the functino render_template())

Try routing different URL endpoints to different Python functions that render differnet HTML pages!

• This is a great example of using a backend (Flask) to handle your frontend (HTML)