PostgreSQL SQLAlchemy opening and closing connections

Run a SQL INSERT statement to open and close a connection to Cloud SQL for PostgreSQL by using SQLAlchemy.

Explore further

For detailed documentation that includes this code sample, see the following:

• Manage database connections

Code sample

Python

To authenticate to Cloud SQL for PostgreSQL, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

# Preparing a statement before hand can help protect against injections.
stmt = sqlalchemy.text(
    "INSERT INTO votes (time_cast, candidate) VALUES (:time_cast, :candidate)"
)
try:
    # Using a with statement ensures that the connection is always released
    # back into the pool at the end of statement (even if an error occurs)
    with db.connect() as conn:
        conn.execute(stmt, parameters={"time_cast": time_cast, "candidate": team})
        conn.commit()
except Exception as e:
    # If something goes wrong, handle the error in this section. This might
    # involve retrying or adjusting parameters depending on the situation.
    # ...

What's next

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