MCP Wikipedia Server

import sys from typing import Any from warnings import warn from langgraph._internal._constants import ( CONF, CONFIG_KEY_CHECKPOINTER, TASKS, ) from langgraph.warnings import LangGraphDeprecatedSinceV10 __all__ = ( "TAG_NOSTREAM", "TAG_HIDDEN", "START", "END", # retained for backwards compatibility (mostly langgraph-api), should be removed in v2 (or earlier) "CONF", "TASKS", "CONFIG_KEY_CHECKPOINTER", ) # --- Public constants --- TAG_NOSTREAM = sys.intern("nostream") """Tag to disable streaming for a chat model.""" TAG_HIDDEN = sys.intern("langsmith:hidden") """Tag to hide a node/edge from certain tracing/streaming environments.""" END = sys.intern("__end__") """The last (maybe virtual) node in graph-style Pregel.""" START = sys.intern("__start__") """The first (maybe virtual) node in graph-style Pregel.""" def __getattr__(name: str) -> Any: if name in ["Send", "Interrupt"]: warn( f"Importing {name} from langgraph.constants is deprecated. " f"Please use 'from langgraph.types import {name}' instead.", LangGraphDeprecatedSinceV10, stacklevel=2, ) from importlib import import_module module = import_module("langgraph.types") return getattr(module, name) try: from importlib import import_module private_constants = import_module("langgraph._internal._constants") attr = getattr(private_constants, name) warn( f"Importing {name} from langgraph.constants is deprecated. " f"This constant is now private and should not be used directly. " "Please let the LangGraph team know if you need this value.", LangGraphDeprecatedSinceV10, stacklevel=2, ) return attr except AttributeError: pass raise AttributeError(f"module has no attribute '{name}'")