Pony is an object-relational mapper. The most interesting feature of Pony is its ability to write queries to the database using generator expressions. Pony works with entities which are mapped to a SQL database. Using generator syntax for writing queries allows the user to formulate very eloquent queries. It increases the level of abstraction and allows a programmer to concentrate on the business logic of the application. For this purpose Pony analyzes the abstract syntax tree of a generator and translates it to its SQL equivalent.

Following is an example of a query in Pony:

select(p for p in Product if p.name.startswith('A') and p.cost <= 1000)

Pony translates queries to SQL using a specific database dialect. Currently Pony works with SQLite, MySQL, PostgreSQL and Oracle databases.

Pony ORM also include the ER Diagram Editor which is a great tool for prototyping. You can create your ER diagram online at https://editor.ponyorm.com, generate the database schema based on the diagram and start working with the database using declarative queries in seconds.

The package pony.orm.examples contains several examples.

Documenation is available at https://docs.ponyorm.com The documentation source is avaliable at https://github.com/ponyorm/pony-doc, it is released under Apache 2.0 license. Please create new documentation related issues https://github.com/ponyorm/pony-doc/issues or make a pull request with your improvements.

We are looking forward to your comments and suggestions at our mailing list http://ponyorm-list.ponyorm.com

Pony ORM is released under multiple licenses, check ponyorm.com for more information.

Copyright (c) 2016 Pony ORM, LLC. All rights reserved. team (at) ponyorm.com

Please send your questions, comments and suggestions to our mailing list http://ponyorm-list.ponyorm.com