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Expand pydantic function arguments by casting the engorgio decorator

Project description


Expands function arguments into fields.


pypi package to come if this works out, and I can decide what to call it. I think its possible to do this for other objects like dataclasses as well.

pip install git+


Setup your models.

from typing import Optional

from pydantic import BaseModel, Field

class Alpha(BaseModel):
    a: int

class Color(BaseModel):
    r: int
    g: int
    b: int
    alpha: Alpha

class Hair(BaseModel):
    color: Color
    length: int

class Person(BaseModel):
    name: str
    other_name: Optional[str] = None
    age: int
    email: Optional[str]
    pet: str = "dog"
    address: str = Field("123 Main St", description="Where the person calls home.")
    hair: Hair

Now create a typer command using your models. engorgio will expand all of the typer fields for you.

import typer
from engorgio import engorgio
app = typer.Typer(
    help="a demo app",

def get_person(person: Person) -> Person:
    """Get a person's information."""
    from rich import print


Get the help message.

engorgio get-person --help

 Usage: engorgio get-person [OPTIONS]

 Get a person's information.

╭─ Options ──────────────────────────────────────────────────────────────────────────────╮
│ --help          Show this message and exit.                                            │
╭─ Person ───────────────────────────────────────────────────────────────────────────────╮
│ *  --name              TEXT     [default: None] [required]                             │
│    --other-name        TEXT     [default: None]                                        │
│ *  --age               INTEGER  [default: None] [required]                             │
│    --email             TEXT     [default: None]                                        │
│    --pet               TEXT     [default: dog]                                         │
│    --address           TEXT     Where the person calls home. [default: 123 Main St]    │
╭─ Person.Hair ──────────────────────────────────────────────────────────────────────────╮
│ *  --length        INTEGER  [default: None] [required]                                 │
╭─ Person.Hair.Color ────────────────────────────────────────────────────────────────────╮
│ *  --r        INTEGER  [default: None] [required]                                      │
│ *  --g        INTEGER  [default: None] [required]                                      │
│ *  --b        INTEGER  [default: None] [required]                                      │
╭─ Person.Hair.Color.Alpha ──────────────────────────────────────────────────────────────╮
│ *  --a        INTEGER  [default: None] [required]                                      │

Calling the cli will print out a Person object.

engorgio get-person --name me --age 1 --r 1 --g 1 --b 1 --a 1 --length 1

Calling the cli while not specifying required arguments will automatically prompt for them.

engorgio get-person


engorgio is distributed under the terms of the MIT license.

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