Have you had experience developing web applications using Flask?

Yes, I have developed web applications using Flask. Flask is a lightweight microframework in Python that allows for quick creation of web servers and APIs. For example, you can create a simple server with one route:

from flask import Flask, jsonify

app = Flask(__name__)

@app.route('/')
def home():
    return jsonify({'message': 'Hello, Flask!'})

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

This approach is convenient for small projects and prototypes, and it can be easily extended with plugins and additional libraries.