richecr / duck-orm

ORM async for Python

DuckORM

The Duck-ORM package is an asynchronous ORM for Python, with support for Postgres and SQLite. ORM is built with:

• databases

Requirements: Python 3.8+

Duck-ORM is still under development.

Installation

$ pip install duck-orm

!!! note Don't forget to install databases before installing duck-orm.

Quickstart

For this example we will create a connection to the SQLite database and create a model.

$ pip install databases[sqlite]
$ pip install ipython

Note that we want to use ipython here, because it supports using await expressions directly from the console.

Creating the connection to the SQLite database:

from databases import Database
from duck_orm.model import Model

db = Database('sqlite:///example.db')
await db.connect()

Defining a model:

from duck_orm.sql import fields as Field

class Person(Model):
    __tablename__ = 'persons'
    __db__ = db

    id: int = Field.Integer(primary_key=True, auto_increment=True)
    first_name: str = Field.String(unique=True)
    last_name: str = Field.String(not_null=True)
    age: int = Field.BigInteger(min_value=18)

# Table creation in the database.
await Person.create()

• The __tablename__ attribute is used to define the table's name in the database.
• The __db__ attribute is the instance of the database connection.
• And then the definition of the fields, their types and restrictions.
• And finally, the table creation in the database.

Author

• Rich Ramalho - @richecr - @richzinho_ecr

License

DuckORM is built as an open-source tool and remains completely free(MIT license).