Ultimate Guide to Install Flask on Ubuntu

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This article will give you example of How to Install Flask on Ubuntu 22.04 using Terminal?. This article goes in detailed on Install Flask on Ubuntu 22.04. you will learn A Guide to Install Flask on Ubuntu 20.04. This article will give you simple example of install flask in ubuntu Code Example.

You can use this post for ubuntu 14.04, ubuntu 16.04, ubuntu 18.4, ubuntu 20.04, ubuntu 21 and ubuntu 22.04 versions.

Step 1: Open Terminal OR Command Prompt

Follow the below-mentioned steps to install the Flask on Ubuntu 22.04 system:

Step 2: Update APT Package

To begin our installation we need to update system repositories in order to make them up to date. To do so, use the following command on your terminal.

 $ sudo apt update && apt upgrade -y
# reboot your system if need be.

Step 3: Verify Python Installed In Your System

By default Ubuntu 22.04 comes with Python 3.8 installed. Verify if Python is installed on your system by typing the below command:

 python3 -V

You will get the following output:

 Output

Python 3.8.5

Step 4: Installing Flask

What we need to do is to install a virtual environment first. Use the following command to create a virtual environment

 sudo apt install python3-venv

Switch into the Flask application directory you just created:

 mkdir flask_app && cd flask_app

To construct the virtual environment, run the following command inside the directory:

 python3 -m venv venv

Step 5: Activate Script

You must activate the virtual environment with the activate script before you may use it:

 source venv/bin/activate

Use the Python package manager pip to install Flask now that the virtual environment has been activated:

 pip install Flask

Run the following command, which prints the Flask version, to verify the installation:

 python -m flask --version