How to install Flask on Fedora?

Hello, friends. In this post, you will learn how to install Flask on Fedora. In theory, we should have no problem completing the post, but as always, we’ll offer you some help.

Introduction

Flask is a “micro” Framework written in Python and developed to simplify and make easier the creation of Web Applications under the MVC pattern.

Don’t be fooled by the “micro” because this doesn’t mean that you can’t do great things with it, but rather because it is minimalistic, and you can add as many components as you want and need.

Let’s go for it.

Install Flask on Fedora

The process is simple but requires a few steps to be executed.

First, open the terminal and make sure the system is up-to-date.

sudo dnf update

Python should be installed by default, but it is always better to be certain.

sudo dnf install python3

So, you need to install PIP which is the Python package manager that we will use for this post.

sudo dnf install python3-pip

Now check the version of PIP

pip3 --version
pip 22.3.1 from /usr/lib/python3.11/site-packages/pip (python 3.11)

Before you use it, update it

pip3 install -U pip

Create a Python virtual environment for Flask

The next step is to create a virtual environment for Flask.

python3 -m venv flaskenv

You can replace flaskenv with any name you want.

The next step is to activate it

source flaskenv/bin/activate

You will notice a change in the terminal prompt.

Get Flask

Now you can install Flask on the system. This is done by running the following command:

pip3 install flask

This will start the download and installation of Flask.

With Flask installed, you can then do a hello-world to demonstrate that everything is in order.

Create the file in question

nano ~/app.py

And add the following:

from flask import Flask

app = Flask(__name__)

@app.route('/')
def hello():
    return 'Hello, welcome to unixcop'

if __name__ == '__main__':
    app.run()

Save the changes and now raise the test server.

python3 ~/app.py

Now open your favorite web browser and go to http://localhost:5000 and you will see the app running.

Conclusion

Flask is one of the most important frameworks available today. It combines Python with the simplicity of being very flexible and suitable for many projects.