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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))