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- """LangGraph specific warnings."""
- from __future__ import annotations
- __all__ = (
- "LangGraphDeprecationWarning",
- "LangGraphDeprecatedSinceV05",
- "LangGraphDeprecatedSinceV10",
- )
- class LangGraphDeprecationWarning(DeprecationWarning):
- """A LangGraph specific deprecation warning.
- Attributes:
- message: Description of the warning.
- since: LangGraph version in which the deprecation was introduced.
- expected_removal: LangGraph version in what the corresponding functionality expected to be removed.
- Inspired by the Pydantic `PydanticDeprecationWarning` class, which sets a great standard
- for deprecation warnings with clear versioning information.
- """
- message: str
- since: tuple[int, int]
- expected_removal: tuple[int, int]
- def __init__(
- self,
- message: str,
- *args: object,
- since: tuple[int, int],
- expected_removal: tuple[int, int] | None = None,
- ) -> None:
- super().__init__(message, *args)
- self.message = message.rstrip(".")
- self.since = since
- self.expected_removal = (
- expected_removal if expected_removal is not None else (since[0] + 1, 0)
- )
- def __str__(self) -> str:
- message = (
- f"{self.message}. Deprecated in LangGraph V{self.since[0]}.{self.since[1]}"
- f" to be removed in V{self.expected_removal[0]}.{self.expected_removal[1]}."
- )
- return message
- class LangGraphDeprecatedSinceV05(LangGraphDeprecationWarning):
- """A specific `LangGraphDeprecationWarning` subclass defining functionality deprecated since LangGraph v0.5.0"""
- def __init__(self, message: str, *args: object) -> None:
- super().__init__(message, *args, since=(0, 5), expected_removal=(2, 0))
- class LangGraphDeprecatedSinceV10(LangGraphDeprecationWarning):
- """A specific `LangGraphDeprecationWarning` subclass defining functionality deprecated since LangGraph v1.0.0"""
- def __init__(self, message: str, *args: object) -> None:
- super().__init__(message, *args, since=(1, 0), expected_removal=(2, 0))
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