langchain[patch]: Add missing deprecation for openai adapters (#20668)

Add missing deprecation for openai adapters

libs/langchain/langchain/adapters/openai.py

@@ -1,20 +1,28 @@
-from langchain_community.adapters.openai import (
+import warnings
-    Chat,
+
-    ChatCompletion,
+from langchain_core._api import LangChainDeprecationWarning
-    ChatCompletionChunk,
+
-    ChatCompletions,
+from langchain.utils.interactive_env import is_interactive_env
-    Choice,
+
-    ChoiceChunk,
+
-    Completions,
+def __getattr__(name: str) -> None:
-    IndexableBaseModel,
+    # If not in interactive env, raise warning.
-    chat,
+    from langchain_community.adapters import openai
-    convert_dict_to_message,
+
-    convert_message_to_dict,
+    if not is_interactive_env():
-    convert_messages_for_finetuning,
+        warnings.warn(
-    convert_openai_messages,
+            "Importing from langchain is deprecated. Importing from "
+            "langchain will no longer be supported as of langchain==0.2.0. "
+            "Instead of `from langchain.adapters.openai import {name}` "
+            "Use `from langchain_community.adapters.openai import {name}`."
+            "To install langchain-community run `pip install -U langchain-community`.",
+            category=LangChainDeprecationWarning,
         )
 
-__all__ = [
+    return getattr(openai, name)
+
+
+__all__ = [  # noqa: F822
     "IndexableBaseModel",
     "Choice",
     "ChatCompletions",