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https://github.com/encode/orm

An async ORM. 🗃
https://github.com/encode/orm

Last synced: 3 days ago
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An async ORM. 🗃

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# ORM



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The `orm` package is an async ORM for Python, with support for Postgres,
MySQL, and SQLite. ORM is built with:

* [SQLAlchemy core][sqlalchemy-core] for query building.
* [`databases`][databases] for cross-database async support.
* [`typesystem`][typesystem] for data validation.

Because ORM is built on SQLAlchemy core, you can use Alembic to provide
database migrations.

---

**Documentation**: [https://www.encode.io/orm](https://www.encode.io/orm)

---

## Installation

```shell
$ pip install orm
```

You can install the required database drivers with:

```shell
$ pip install orm[postgresql]
$ pip install orm[mysql]
$ pip install orm[sqlite]
```

Driver support is provided using one of [asyncpg][asyncpg], [aiomysql][aiomysql], or [aiosqlite][aiosqlite].

---

## Quickstart

**Note**: Use `ipython` to try this from the console, since it supports `await`.

```python
import databases
import orm

database = databases.Database("sqlite:///db.sqlite")
models = orm.ModelRegistry(database=database)

class Note(orm.Model):
tablename = "notes"
registry = models
fields = {
"id": orm.Integer(primary_key=True),
"text": orm.String(max_length=100),
"completed": orm.Boolean(default=False),
}

# Create the tables
await models.create_all()

await Note.objects.create(text="Buy the groceries.", completed=False)

note = await Note.objects.get(id=1)
print(note)
# Note(id=1)
```

— 🗃 —


ORM is BSD licensed code. Designed & built in Brighton, England.

[sqlalchemy-core]: https://docs.sqlalchemy.org/en/latest/core/
[asyncpg]: https://github.com/MagicStack/asyncpg
[aiomysql]: https://github.com/aio-libs/aiomysql
[aiosqlite]: https://github.com/jreese/aiosqlite

[databases]: https://github.com/encode/databases
[typesystem]: https://github.com/encode/typesystem
[typesystem-fields]: https://www.encode.io/typesystem/fields/