Explain the database connection in python flask?

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Explain the database connection in python flask?..

Answer / Durga Datt Upadhyay

In Flask, you can use extensions to handle database connections. One such extension is Flask-SQLAlchemy. First, you'll need to install SQLAlchemy and then initialize it in your application. Then, you can define a database URI, create a database object, and define your models.nnHere's an example:nn```pythonnfrom flask import Flasknfrom flask_sqlalchemy import SQLAlchemynnapp = Flask(__name__)napp.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:////tmp/test.db' ndb = SQLAlchemy(app)nn# Define a model classnclass User(db.Model):n id = db.Column(db.Integer, primary_key=True)n username = db.Column(db.String(80), unique=True, nullable=False)npassword = db.Column(db.String(120))nn# Create the database tablesndb.create_all()```

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