from .shared import PYDANTIC_VERSION_MINOR_TUPLE as PYDANTIC_VERSION_MINOR_TUPLE
from .shared import annotation_is_pydantic_v1 as annotation_is_pydantic_v1
from .shared import field_annotation_is_scalar as field_annotation_is_scalar
from .shared import (
    field_annotation_is_scalar_sequence as field_annotation_is_scalar_sequence,
)
from .shared import field_annotation_is_sequence as field_annotation_is_sequence
from .shared import (

import warnings
from typing import (
    TYPE_CHECKING,
    Any,
    Literal,
)

import fastapi
from fastapi._compat import (
    ModelField,
    PydanticSchemaGenerationError,
    Undefined,
    annotation_is_pydantic_v1,
)
from fastapi.datastructures import DefaultPlaceholder, DefaultType
from fastapi.exceptions import FastAPIDeprecationWarning, PydanticV1NotSupportedError
from pydantic.fields import FieldInfo

            from pydantic import v1
    except ImportError:  # pragma: no cover
        return False
    return lenient_issubclass(cls, v1.BaseModel)


def annotation_is_pydantic_v1(annotation: Any) -> bool:
    if is_pydantic_v1_model_class(annotation):
        return True
    origin = get_origin(annotation)
    if origin is Union or origin is UnionType: