How to Install Flask on CentOS 7


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Installing Flask on CentOS 7

Flask is a lightweight web framework written in Python that allows you to quickly and easily build web applications. In this guide, we will go through the steps to install Flask on CentOS 7.

  1. Update the System Packages:
    $ sudo yum update
  2. Install Python and Pip:
    $ sudo yum install python3
    $ sudo yum install python3-pip
  3. Create a Virtual Environment:
    $ python3 -m venv myenv
  4. Activate the Virtual Environment:
    $ source myenv/bin/activate
  5. Install Flask:
    (myenv) $ pip install flask
  6. Create a Flask Application:
    (myenv) $ nano app.py

Enter the following code into the app.py file:

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

Save and exit the file.

Run the Flask Application:

(myenv) $ python app.py

You will see output similar to:

 * Running on (Press CTRL+C to quit)

Open your web browser and visit You should see "Hello, World!" displayed on the page.

Flask is now successfully installed on CentOS 7, and you can start building your web applications using this lightweight framework.

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