Building SQLAlchemy Objects
In this chapter, you'll learn how to set up your database session and add data to the database using SQLAlchemy. By the end, you'll understand how to create a session, add a new record, and save it. After creating the model, you can proceed to creating objects and saving them to the database.
1. Set Up the Session
A session is your primary tool for interacting with the database. Use sessionmaker to bind the engine and create a session:
Session = sessionmaker(bind=engine)
session = Session()
The Session() function creates an active session that serves as a workspace for staging and preparing database operations before they are committed.
2. Add a New Object
To add data, follow these steps:
- Create an Object
Instantiate a model class (e.g.,Product) with the required attributes.new_product = Product(name="Laptop", description="High-end gaming laptop", price=1500) - Stage the Object
Add the object to the session withadd().session.add(new_product) - Save the Changes
Commit the session to finalize the transaction.session.commit()
Swipe to start coding
- Initialize the database session using
Session. - Create a new object of the
Productclass with the specified attributes. - Add the new object to the session using the appropriate method.
- Commit the transaction to save changes to the database.
Solución
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Completion rate improved to 4.76Building SQLAlchemy Objects
In this chapter, you'll learn how to set up your database session and add data to the database using SQLAlchemy. By the end, you'll understand how to create a session, add a new record, and save it. After creating the model, you can proceed to creating objects and saving them to the database.
1. Set Up the Session
A session is your primary tool for interacting with the database. Use sessionmaker to bind the engine and create a session:
Session = sessionmaker(bind=engine)
session = Session()
The Session() function creates an active session that serves as a workspace for staging and preparing database operations before they are committed.
2. Add a New Object
To add data, follow these steps:
- Create an Object
Instantiate a model class (e.g.,Product) with the required attributes.new_product = Product(name="Laptop", description="High-end gaming laptop", price=1500) - Stage the Object
Add the object to the session withadd().session.add(new_product) - Save the Changes
Commit the session to finalize the transaction.session.commit()
Swipe to start coding
- Initialize the database session using
Session. - Create a new object of the
Productclass with the specified attributes. - Add the new object to the session using the appropriate method.
- Commit the transaction to save changes to the database.
Solución
Cambia al escritorio para practicar en el mundo realContinúe desde donde se encuentra utilizando una de las siguientes opciones¡Gracias por tus comentarios!
single
Awesome!
Completion rate improved to 4.76Building SQLAlchemy Objects
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In this chapter, you'll learn how to set up your database session and add data to the database using SQLAlchemy. By the end, you'll understand how to create a session, add a new record, and save it. After creating the model, you can proceed to creating objects and saving them to the database.
1. Set Up the Session
A session is your primary tool for interacting with the database. Use sessionmaker to bind the engine and create a session:
Session = sessionmaker(bind=engine)
session = Session()
The Session() function creates an active session that serves as a workspace for staging and preparing database operations before they are committed.
2. Add a New Object
To add data, follow these steps:
- Create an Object
Instantiate a model class (e.g.,Product) with the required attributes.new_product = Product(name="Laptop", description="High-end gaming laptop", price=1500) - Stage the Object
Add the object to the session withadd().session.add(new_product) - Save the Changes
Commit the session to finalize the transaction.session.commit()
Swipe to start coding
- Initialize the database session using
Session. - Create a new object of the
Productclass with the specified attributes. - Add the new object to the session using the appropriate method.
- Commit the transaction to save changes to the database.
Solución
Cambia al escritorio para practicar en el mundo realContinúe desde donde se encuentra utilizando una de las siguientes opciones¡Gracias por tus comentarios!
