Installing Python Flask

If you’re looking to build web applications using Python, Flask is a great choice for a lightweight and flexible web framework. In this blog post, we will guide you through the installation process of Flask on your machine.

Step 1: Install Python

Before we can install Flask, we need to have Python installed on our system. You can download the latest version of Python from the official website.

Step 2: Install Flask

Once Python is installed, we can use the pip package manager to install Flask. Open a terminal or command prompt and run the following command:

pip install Flask

This will download and install Flask along with any dependencies it requires.

Step 3: Verify Installation

To verify that Flask has been installed successfully, you can create a simple Flask application. Create a new Python file (e.g. app.py) and add the following code:

from flask import Flask

app = Flask(__name__)

@app.route('/')
def hello_world():
    return 'Hello, World!'

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

Save the file and run it using the following command:

python app.py

You should see output similar to:

 * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)

Open a web browser and navigate to http://127.0.0.1:5000/. You should see the message “Hello, World!” displayed on the page.

Congratulations! You have successfully installed Flask and created your first Flask application. Happy coding!