Building Your First Web Application with Flask: A Simple Introduction to Flask Framework

 Here's an example of a simple Flask app that displays a basic webpage:

python
from flask import Flask

app = Flask(__name__)

@app.route('/')
def hello():
    return "Hello, Flask!"

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

In this Flask app, we import the Flask class from the flask module. We then create an instance of the Flask class and assign it to the variable app. The @app.route('/') decorator defines the route for the root URL (i.e., http://localhost:5000/). When a user visits that URL, the hello() function is executed, and it returns the "Hello, Flask!" message.

To run this app, save it to a file (e.g., app.py) and execute it using Python. Open your browser and visit http://localhost:5000/ to see the "Hello, Flask!" message.

Note: You need to have Flask installed on your system. You can install it using the following command:

pip install flask

Feel free to modify the app, add more routes, and customize the content to suit your needs. Flask is a powerful web framework that allows you to build more complex applications as you progress.

Let me know if you have any questions or need further assistance!


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