Pony – advanced object-relational mapper

Pony is an advanced object-relational mapper.

Pony is an easy-to-learn and easy-to-use library. It makes your work more productive and helps to save resources.

This is free and open source software.

Features include:

  • Write queries to the database using Python generator expressions and lambdas. Queries may be written by a developer familiar with Python, even without being a database expert.
  • Analyzes the abstract syntax tree of the expression and translates it into a SQL query.
  • Automatic query optimization
  • An elegant solution for the N+1 problem
  • The online database schema editor
  • Compact entity definitions.
  • The concise query language.
  • Ability to work with Pony interactively in a Python interpreter.
  • Comprehensive error messages, showing the exact part where an error occurred in the query.
  • Displaying of the generated SQL in a readable format with indentation.
  • The IdentityMap pattern.
  • Automatic transaction management.
  • Automatic caching of queries and objects.
  • Full support of composite keys.
  • The ability to easily write queries using LEFT JOIN, HAVING and other features of SQL.
  • Pythonic API.

Website: github.com/ponyorm/pony/
Support: Documentation
Developer: Alexander Kozlovsky and contributors
License: Apache License 2.0

Pony is written in Python. Learn Python with our recommended free books and free tutorials.

Return to Python ORM Software Home Page


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