[litellm] Remove LangChain from source code (#1435)

* remove LangChain from jupyter_ai_magics

* remove unused useServerInfo() hook in frontend

* remove LangChain references from jupyter_ai

* remove langchain from test & cookiecutter packages

* move all completions code to jupyter_ai.completions

* remove LangChain provider code from ConfigManager

* minor fixes to allow JAI to start

Author: dlqqq

packages/jupyter-ai-magics/jupyter_ai_magics/__init__.py

@@ -1,89 +1,19 @@
-from typing import TYPE_CHECKING
-
-from ._import_utils import import_attr as _import_attr
+from __future__ import annotations
 from ._version import __version__
 
-if TYPE_CHECKING:
-    # same as dynamic imports but understood by mypy
-    from .embedding_providers import (
-        BaseEmbeddingsProvider,
-        GPT4AllEmbeddingsProvider,
-        HfHubEmbeddingsProvider,
-        QianfanEmbeddingsEndpointProvider,
-    )
-    from .exception import store_exception
-    from .magics import AiMagics
-    from .providers import (
-        AI21Provider,
-        BaseProvider,
-        GPT4AllProvider,
-        HfHubProvider,
-        QianfanProvider,
-        TogetherAIProvider,
-    )
-else:
-    _exports_by_module = {
-        "embedding_providers": [
-            "BaseEmbeddingsProvider",
-            "GPT4AllEmbeddingsProvider",
-            "HfHubEmbeddingsProvider",
-            "QianfanEmbeddingsEndpointProvider",
-        ],
-        "exception": ["store_exception"],
-        "magics": ["AiMagics"],
-        # expose model providers on the package root
-        "providers": [
-            "AI21Provider",
-            "BaseProvider",
-            "GPT4AllProvider",
-            "HfHubProvider",
-            "QianfanProvider",
-            "TogetherAIProvider",
-        ],
-    }
+from typing import TYPE_CHECKING
 
-    _modules_by_export = {
-        import_name: module
-        for module, imports in _exports_by_module.items()
-        for import_name in imports
-    }
+if TYPE_CHECKING:
+    from IPython.core.interactiveshell import InteractiveShell
 
-    def __getattr__(export_name: str) -> object:
-        module_name = _modules_by_export.get(export_name)
-        result = _import_attr(export_name, module_name, __spec__.parent)
-        globals()[export_name] = result
-        return result
 
+def load_ipython_extension(ipython: InteractiveShell):
+    from .exception import store_exception
+    from .magics import AiMagics
 
-def load_ipython_extension(ipython):
-    ipython.register_magics(__getattr__("AiMagics"))
-    ipython.set_custom_exc((BaseException,), __getattr__("store_exception"))
+    ipython.register_magics(AiMagics)
+    ipython.set_custom_exc((BaseException,), store_exception)
 
 
-def unload_ipython_extension(ipython):
+def unload_ipython_extension(ipython: InteractiveShell):
     ipython.set_custom_exc((BaseException,), ipython.CustomTB)
-
-
-# required to preserve backward compatibility with `from jupyter_ai_magics import *`
-__all__ = [
-    "__version__",
-    "load_ipython_extension",
-    "unload_ipython_extension",
-    "BaseEmbeddingsProvider",
-    "GPT4AllEmbeddingsProvider",
-    "HfHubEmbeddingsProvider",
-    "QianfanEmbeddingsEndpointProvider",
-    "store_exception",
-    "AiMagics",
-    "AI21Provider",
-    "BaseProvider",
-    "GPT4AllProvider",
-    "HfHubProvider",
-    "QianfanProvider",
-    "TogetherAIProvider",
-]
-
-
-def __dir__():
-    # Allows more editors (e.g. IPython) to complete on `jupyter_ai_magics.<tab>`
-    return list(__all__)