Python Intermediate

What is SQLAlchemy?

The most popular Python SQL toolkit and ORM that provides a full suite of database abstraction patterns.

SQLAlchemy offers two usage patterns: Core (SQL expression language for explicit queries) and ORM (object-relational mapping for model-based access). It supports PostgreSQL, MySQL, SQLite, Oracle, and more.

Key features include connection pooling, lazy loading, eager loading, unit of work pattern, migrations (via Alembic), and complex query building. SQLAlchemy 2.0 introduced a modernized API with better type checking support.

Related Terms

A Python library for writing concurrent code using async/await syntax for non-blocking I/O operations.

A class mechanism that restricts attribute creation and reduces memory usage by using a fixed set of instance variables.

A data validation library that uses Python type annotations to validate and serialize data with automatic error reporting.

A modern Python dependency management and packaging tool that handles virtual environments, locking, and publishing.

Special double-underscore methods that define how Python objects behave with built-in operations and functions.

The most popular Python machine learning library providing simple and efficient tools for data analysis and modeling.

View All Python Terms →