gistfile3.py

import pandas
from pydantic import BaseModel

class CustomBaseModel(BaseModel):
    class Config:
        arbitrary_types_allowed = True
        json_encoders = {
            pandas.DataFrame: lambda v: serialize_with_pyarrow(v)
        }

class Dataset(CustomBaseModel):
    id: str
    name: constr(max_length=128)
    dataframe: pandas.DataFrame
 
    @validator('id')
    def is_uuid4_string(cls, value):
        try:
            UUID(value, version=4)
        except ValueError as ve:
            raise ValueError('The id value is not uuid4') from ve
        return value