https://github.com/robinl/pydantic_marshmallow_tests

https://github.com/robinl/pydantic_marshmallow_tests

Last synced: about 1 month ago
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• Host: GitHub
• URL: https://github.com/robinl/pydantic_marshmallow_tests
• Owner: RobinL
• Created: 2023-12-09T11:31:15.000Z (about 1 year ago)
• Default Branch: main
• Last Pushed: 2023-12-11T08:47:13.000Z (about 1 year ago)
• Last Synced: 2024-10-13T00:08:34.617Z (2 months ago)
• Language: Python
• Size: 11.7 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# pydantic_marshmallow_tests

## Pydantic benefits

### Nested creation of objects from json

`Settings` can have nested `Comparisons`, which have `ComparisonLevel`s.

These objects will be auto-instantiated with `Settings(settings_dict)`

### Automatic support for instantiating mix of dicts and objects

e.g. `comparisons` can be `[dict, Comparison]` and this will be automatically turned into `[Comparison, Comparison]`

### Automatic dump to dict or json

Once models have been defined, you get json dump and json load for free

### Validation

If a user accidentally puts a `ComparisonLevel` where a comparison should go, an error will be raised

It's possible to add arbitrary validation, such as on enums, or checking 0 < value < 1

### Automatic json schema

A [jsonschema](https://json-schema.org/draft/2020-12/release-notes) compatible json schema can be generated with `settings.model_json_schema()`

## Marshmallow comparison

https://www.augmentedmind.de/2020/10/25/marshmallow-vs-pydantic-python/

Marshmallow has fewer dependencies

https://libraries.io/pypi/pydantic/2.5.2/tree

Marshmallow is more verbose in its vanilla form. there's a lib called marshmallow data classes that possibly helps.

> It was created before there existed Python type hints. So, to define every schema you need to use specific utils and classes provided by Marshmallow. [link](https://fastapi.tiangolo.com/tr/alternatives/#marshmallow)

> [Pydantic] is comparable to Marshmallow. Although it's faster than Marshmallow in benchmarks. And as it is based on the same Python type hints, the editor support is great. [link](https://fastapi.tiangolo.com/tr/alternatives/#pydantic)

> You need to decide early on whether you want to put class definition and schema definition into a single class (using a dataclass - the Pydantic way), or whether to keep them separated (marshmallow). The latter is semantically cleaner, but involves writing more code.[link](https://www.augmentedmind.de/2020/10/25/marshmallow-vs-pydantic-python/)