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https://github.com/reagento/adaptix
An extremely flexible and configurable data model conversion library.
https://github.com/reagento/adaptix
conversion dataclass dataclasses deserialization dicts generic-dataclasses json python python3 schemas serialization type-hints typehints typing
Last synced: 13 days ago
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An extremely flexible and configurable data model conversion library.
- Host: GitHub
- URL: https://github.com/reagento/adaptix
- Owner: reagento
- License: apache-2.0
- Created: 2018-09-07T16:29:23.000Z (about 6 years ago)
- Default Branch: main
- Last Pushed: 2024-04-29T10:54:36.000Z (7 months ago)
- Last Synced: 2024-05-01T14:39:44.463Z (7 months ago)
- Topics: conversion, dataclass, dataclasses, deserialization, dicts, generic-dataclasses, json, python, python3, schemas, serialization, type-hints, typehints, typing
- Language: Python
- Homepage: https://adaptix.readthedocs.io
- Size: 2.82 MB
- Stars: 309
- Watchers: 5
- Forks: 24
- Open Issues: 52
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
[](https://pypi.org/project/adaptix/)
[](https://pypistats.org/packages/adaptix)
[](https://github.com/reagento/adaptix)
[](https://github.com/reagento/adaptix/blob/master/LICENSE)
An extremely flexible and configurable data model conversion library.
> [!IMPORTANT]
> Adaptix is ready for production!
> The beta version only means there may be some backward incompatible changes, so you need to pin a specific version.
📚 [Documentation](https://adaptix.readthedocs.io/)
## TL;DR
Install
```bash
pip install adaptix==3.0.0b8
```
Use for model loading and dumping.
```python
from dataclasses import dataclass
from adaptix import Retort
@dataclass
class Book:
title: str
price: int
data = {
"title": "Fahrenheit 451",
"price": 100,
}
# Retort is meant to be global constant or just one-time created
retort = Retort()
book = retort.load(data, Book)
assert book == Book(title="Fahrenheit 451", price=100)
assert retort.dump(book) == data
```
Use for converting one model to another.
```python
from dataclasses import dataclass
from sqlalchemy.orm import DeclarativeBase, Mapped, mapped_column
from adaptix.conversion import get_converter
class Base(DeclarativeBase):
pass
class Book(Base):
__tablename__ = 'books'
id: Mapped[int] = mapped_column(primary_key=True)
title: Mapped[str]
price: Mapped[int]
@dataclass
class BookDTO:
id: int
title: str
price: int
convert_book_to_dto = get_converter(Book, BookDTO)
assert (
convert_book_to_dto(Book(id=183, title="Fahrenheit 451", price=100))
==
BookDTO(id=183, title="Fahrenheit 451", price=100)
)
```
## Use cases
* Validation and transformation of received data for your API.
* Conversion between data models and DTOs.
* Config loading/dumping via codec that produces/takes dict.
* Storing JSON in a database and representing it as a model inside the application code.
* Creating API clients that convert a model to JSON sending to the server.
* Persisting entities at cache storage.
* Implementing fast and primitive ORM.
## Advantages
* Sane defaults for JSON processing, no configuration is needed for simple cases.
* Separated model definition and rules of conversion
that allow preserving [SRP](https://blog.cleancoder.com/uncle-bob/2014/05/08/SingleReponsibilityPrinciple.html)
and have different representations for one model.
* Speed. It is one of the fastest data parsing and serialization libraries.
* There is no forced model representation, adaptix can adjust to your needs.
* Support [dozens](https://adaptix.readthedocs.io/en/latest/loading-and-dumping/specific-types-behavior.html) of types,
including different model kinds:
``@dataclass``, ``TypedDict``, ``NamedTuple``,
[``attrs``](https://www.attrs.org/en/stable/), [``sqlalchemy``](https://docs.sqlalchemy.org/en/20/) and [``pydantic``](https://docs.pydantic.dev/latest/).
* Working with self-referenced data types (such as linked lists or trees).
* Saving [path](https://adaptix.readthedocs.io/en/latest/loading-and-dumping/tutorial.html#error-handling)
where an exception is raised (including unexpected errors).
* Machine-readable [errors](https://adaptix.readthedocs.io/en/latest/loading-and-dumping/tutorial.html#error-handling)
that could be dumped.
* Support for user-defined generic models.
* Automatic name style conversion (e.g. `snake_case` to `camelCase`).
* [Predicate system](https://adaptix.readthedocs.io/en/latest/loading-and-dumping/tutorial.html#predicate-system)
that allows to concisely and precisely override some behavior.
* Disabling additional checks to speed up data loading from trusted sources.
* No auto casting by default. The loader does not try to guess value from plenty of input formats.