You are looking at an HTML rendering of the generated widgets, they are lacking responsiveness due to no Python kernel being available for callbacks.

Form from Pydantic models

Pass a Pydantic model class directly. The schema is derived automatically.

from pydantic import BaseModel, Field
from ipywidgets_jsonschema import Form


class InstrumentConfig(BaseModel):
    instrument_name: str = Field("spectrometer", description="Display name")
    serial_number: str = Field("ABC-0001", pattern=r"^[A-Z]{3}-[0-9]{4}$")
    sample_rate_hz: int = Field(1000, ge=1, le=5000)
    calibration_gain: float = Field(1.0, ge=0.1, le=10.0)
    enabled: bool = True


pydantic_form = Form(InstrumentConfig, show_descriptions=True)
pydantic_form.show()

pydantic_form.data

{'instrument_name': 'spectrometer',
 'serial_number': 'ABC-0001',
 'sample_rate_hz': 1000,
 'calibration_gain': 1.0,
 'enabled': True}