73 lines
2.6 KiB
Python
73 lines
2.6 KiB
Python
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from __future__ import annotations as _annotations
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import warnings
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from typing import TYPE_CHECKING, Any
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from typing_extensions import Literal, deprecated
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from .._internal import _config
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from ..warnings import PydanticDeprecatedSince20
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if not TYPE_CHECKING:
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# See PyCharm issues https://youtrack.jetbrains.com/issue/PY-21915
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# and https://youtrack.jetbrains.com/issue/PY-51428
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DeprecationWarning = PydanticDeprecatedSince20
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__all__ = 'BaseConfig', 'Extra'
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class _ConfigMetaclass(type):
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def __getattr__(self, item: str) -> Any:
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try:
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obj = _config.config_defaults[item]
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warnings.warn(_config.DEPRECATION_MESSAGE, DeprecationWarning)
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return obj
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except KeyError as exc:
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raise AttributeError(f"type object '{self.__name__}' has no attribute {exc}") from exc
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@deprecated('BaseConfig is deprecated. Use the `pydantic.ConfigDict` instead.', category=PydanticDeprecatedSince20)
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class BaseConfig(metaclass=_ConfigMetaclass):
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"""This class is only retained for backwards compatibility.
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!!! Warning "Deprecated"
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BaseConfig is deprecated. Use the [`pydantic.ConfigDict`][pydantic.ConfigDict] instead.
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"""
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def __getattr__(self, item: str) -> Any:
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try:
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obj = super().__getattribute__(item)
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warnings.warn(_config.DEPRECATION_MESSAGE, DeprecationWarning)
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return obj
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except AttributeError as exc:
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try:
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return getattr(type(self), item)
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except AttributeError:
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# re-raising changes the displayed text to reflect that `self` is not a type
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raise AttributeError(str(exc)) from exc
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def __init_subclass__(cls, **kwargs: Any) -> None:
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warnings.warn(_config.DEPRECATION_MESSAGE, DeprecationWarning)
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return super().__init_subclass__(**kwargs)
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class _ExtraMeta(type):
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def __getattribute__(self, __name: str) -> Any:
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# The @deprecated decorator accesses other attributes, so we only emit a warning for the expected ones
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if __name in {'allow', 'ignore', 'forbid'}:
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warnings.warn(
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"`pydantic.config.Extra` is deprecated, use literal values instead (e.g. `extra='allow'`)",
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DeprecationWarning,
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stacklevel=2,
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)
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return super().__getattribute__(__name)
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@deprecated(
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"Extra is deprecated. Use literal values instead (e.g. `extra='allow'`)", category=PydanticDeprecatedSince20
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)
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class Extra(metaclass=_ExtraMeta):
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allow: Literal['allow'] = 'allow'
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ignore: Literal['ignore'] = 'ignore'
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forbid: Literal['forbid'] = 'forbid'
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