Files
pydantic/docs/datamodel_code_generator.md
Arseny Boykov c24d33e5f1 Generate docs exampels for Python 3.10 and above (#4339)
* Generate docs exampels for Python 3.10 and above

Code quality is not great and main intent here is to show the result.

* Fix docs build on 3.9

* Build docs on 3.10

* What's Python 3.1?

* Create temp dir if not exists

* Refactor and improve imlementetion

* Keep runtime typing in examples

* Revert unrelated formatting changes

* Add changes file

* Allow specifying requirements in examples

* Pin autoflake and pyupgrade

* Add docs/build to Makefile lint/format/mypy

* ignore_missing_imports for ansi2html and devtools

* Add .tmp-projections to .gitignore

* Remove dont-upgrade now when Pattern is supported

* Update postponed evaluation examples

Co-authored-by: Samuel Colvin <s@muelcolvin.com>
2022-08-14 17:21:53 +01:00

77 lines
1.7 KiB
Markdown

The [datamodel-code-generator](https://github.com/koxudaxi/datamodel-code-generator/) project is a library and command-line utility to generate pydantic models from just about any data source, including:
* OpenAPI 3 (YAML/JSON)
* JSON Schema
* JSON/YAML Data (which will converted to JSON Schema)
Whenever you find yourself with any data convertible JSON but without pydantic models, this tool will allow you to generate type-safe model hierarchies on demand.
## Installation
```bash
pip install datamodel-code-generator
```
## Example
In this case, datamodel-code-generator creates pydantic models from a JSON Schema file.
```bash
datamodel-codegen --input person.json --input-file-type jsonschema --output model.py
```
person.json:
```json
{
"$id": "person.json",
"$schema": "http://json-schema.org/draft-07/schema#",
"title": "Person",
"type": "object",
"properties": {
"first_name": {
"type": "string",
"description": "The person's first name."
},
"last_name": {
"type": "string",
"description": "The person's last name."
},
"age": {
"description": "Age in years.",
"type": "integer",
"minimum": 0
},
"pets": {
"type": "array",
"items": [
{
"$ref": "#/definitions/Pet"
}
]
},
"comment": {
"type": "null"
}
},
"required": [
"first_name",
"last_name"
],
"definitions": {
"Pet": {
"properties": {
"name": {
"type": "string"
},
"age": {
"type": "integer"
}
}
}
}
}
```
model.py:
{!.tmp_examples/generate_models_person_model.md!}
More information can be found on the
[official documentation](https://koxudaxi.github.io/datamodel-code-generator/)