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    You are at:Home»General Articles»How to Install and Use Flask in Fedora 37/36

    How to Install and Use Flask in Fedora 37/36

    By RahulJanuary 13, 20233 Mins Read

    Flask is a popular microweb framework written in Python. It is lightweight and easy to use, making it a good choice for developing small web applications. It is designed to enable developers to create and scale web apps quickly and easily. It has a small and easy-to-extend core, with sensible defaults to get started quickly.

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    In this article, we will show you how to install and use Flask on a Fedora system.

    Prerequisites

    Before you start, make sure that you have the following installed on your system:

    • Python 3: Flask is a Python web framework, so you will need to have Python installed on your system. You can check if you have Python installed by running the following command:
      python3 -V 
      

      If Python is not installed, you can install it by running the following command:

      sudo dnf install python3 
      
    • Pip: pip is the package manager for Python. It is used to install Python packages, such as Flask. You can check if you have pip installed by running the following command:
      pip3 -V 
      

      If pip is not installed, you can install it by running the following command:

      sudo dnf install python3-pip 
      

    Installing Flask on Fedora

    Once you have Python and pip installed, you can use pip to install Flask. To install Flask, run the following command:

    pip3 install Flask 
    

    This will install Flask and all of its dependencies.

    Creating a Flask App

    Now that you have Flask installed, you can create a simple Flask app. Create a file called app.py and add the following code:

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    from flask import Flask
     
    app = Flask(__name__)
     
    @app.route('/')
    def hello():
        return 'Hello, World!'
     
    if __name__ == '__main__':
        app.run()

    This code creates a simple Flask app that displays a message when you visit the root URL.

    Run Your Flask Application

    To run the Flask app, open a terminal and navigate to the directory where you saved app.py. Then, run the following command:

    python3 app.py 
    

    This will start the Flask development server, and you should see the following output:

    Output
    * Serving Flask app 'app' * Debug mode: off WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead. * Running on http://127.0.0.1:5000 Press CTRL+C to quit

    To view the app, open a web browser and go to the URL http://127.0.0.1:5000/. You should see the message “Hello, World!” displayed on the page.

    Conclusion

    In this article, we showed you how to install and use Flask on a Fedora system. Flask is a lightweight and easy-to-use web framework that is perfect for developing small web applications. With Flask, you can create powerful and dynamic web applications with minimal effort.

    Flask Python
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