Migrate to locations of imports (#625)

Migrate to new locations of imports

examples/agent/server.py

@@ -20,15 +20,15 @@
 from typing import Any
 
 from fastapi import FastAPI
-from langchain.agents import AgentExecutor, tool
+from langchain.agents import AgentExecutor
 from langchain.agents.format_scratchpad import format_to_openai_functions
 from langchain.agents.output_parsers import OpenAIFunctionsAgentOutputParser
-from langchain.chat_models import ChatOpenAI
-from langchain.embeddings import OpenAIEmbeddings
-from langchain.prompts import ChatPromptTemplate, MessagesPlaceholder
 from langchain.pydantic_v1 import BaseModel
-from langchain.tools.render import format_tool_to_openai_function
-from langchain.vectorstores import FAISS
+from langchain_community.vectorstores import FAISS
+from langchain_core.prompts import ChatPromptTemplate, MessagesPlaceholder
+from langchain_core.tools import tool
+from langchain_core.utils.function_calling import format_tool_to_openai_function
+from langchain_openai import ChatOpenAI, OpenAIEmbeddings
 
 from langserve import add_routes
 

examples/agent_custom_streaming/server.py

@@ -47,15 +47,15 @@
 from typing import Any, AsyncIterator, List, Literal
 
 from fastapi import FastAPI
-from langchain.agents import AgentExecutor, tool
+from langchain.agents import AgentExecutor
 from langchain.agents.format_scratchpad.openai_tools import (
     format_to_openai_tool_messages,
 )
 from langchain.agents.output_parsers.openai_tools import OpenAIToolsAgentOutputParser
-from langchain.prompts import MessagesPlaceholder
-from langchain_community.tools.convert_to_openai import format_tool_to_openai_tool
-from langchain_core.prompts import ChatPromptTemplate
+from langchain_core.prompts import ChatPromptTemplate, MessagesPlaceholder
 from langchain_core.runnables import RunnableLambda
+from langchain_core.tools import tool
+from langchain_core.utils.function_calling import format_tool_to_openai_tool
 from langchain_openai import ChatOpenAI
 
 from langserve import add_routes

examples/agent_with_history/server.py

@@ -26,15 +26,15 @@
 from typing import Any, List, Union
 
 from fastapi import FastAPI
-from langchain.agents import AgentExecutor, tool
+from langchain.agents import AgentExecutor
 from langchain.agents.format_scratchpad.openai_tools import (
     format_to_openai_tool_messages,
 )
 from langchain.agents.output_parsers.openai_tools import OpenAIToolsAgentOutputParser
-from langchain.prompts import MessagesPlaceholder
-from langchain_community.tools.convert_to_openai import format_tool_to_openai_tool
 from langchain_core.messages import AIMessage, FunctionMessage, HumanMessage
-from langchain_core.prompts import ChatPromptTemplate
+from langchain_core.prompts import ChatPromptTemplate, MessagesPlaceholder
+from langchain_core.tools import tool
+from langchain_core.utils.function_calling import format_tool_to_openai_tool
 from langchain_openai import ChatOpenAI
 
 from langserve import add_routes

examples/auth/api_handler/server.py

@@ -35,7 +35,6 @@
 
 from fastapi import Depends, FastAPI, HTTPException, Request, Response, status
 from fastapi.security import OAuth2PasswordBearer, OAuth2PasswordRequestForm
-from langchain_community.embeddings.openai import OpenAIEmbeddings
 from langchain_community.vectorstores.chroma import Chroma
 from langchain_core.documents import Document
 from langchain_core.runnables import (
@@ -44,6 +43,7 @@
     RunnableSerializable,
 )
 from langchain_core.vectorstores import VectorStore
+from langchain_openai import OpenAIEmbeddings
 from typing_extensions import Annotated
 
 from langserve import APIHandler

examples/auth/per_req_config_modifier/server.py

@@ -36,7 +36,6 @@
 
 from fastapi import Depends, FastAPI, HTTPException, Request, status
 from fastapi.security import OAuth2PasswordBearer, OAuth2PasswordRequestForm
-from langchain_community.embeddings.openai import OpenAIEmbeddings
 from langchain_community.vectorstores.chroma import Chroma
 from langchain_core.documents import Document
 from langchain_core.runnables import (
@@ -45,6 +44,7 @@
     RunnableSerializable,
 )
 from langchain_core.vectorstores import VectorStore
+from langchain_openai import OpenAIEmbeddings
 from typing_extensions import Annotated
 
 from langserve import add_routes

examples/chat_playground/legacy_input/server.py

@@ -5,7 +5,7 @@
 from typing import List, Union
 
 from fastapi import FastAPI
-from langchain.chat_models import ChatAnthropic
+from langchain_anthropic import ChatAnthropic
 from langchain_core.messages import AIMessage, HumanMessage, SystemMessage
 from langchain_core.prompts import ChatPromptTemplate, MessagesPlaceholder
 

examples/chat_with_persistence/server.py

@@ -13,8 +13,8 @@
 from typing import Callable, Union
 
 from fastapi import FastAPI, HTTPException
-from langchain.chat_models import ChatAnthropic
-from langchain.memory import FileChatMessageHistory
+from langchain_anthropic import ChatAnthropic
+from langchain_community.chat_message_histories import FileChatMessageHistory
 from langchain_core.chat_history import BaseChatMessageHistory
 from langchain_core.prompts import ChatPromptTemplate, MessagesPlaceholder
 from langchain_core.runnables.history import RunnableWithMessageHistory

examples/chat_with_persistence_and_user/server.py

@@ -13,13 +13,13 @@
 from typing import Any, Callable, Dict, Union
 
 from fastapi import FastAPI, HTTPException, Request
-from langchain.chat_models import ChatOpenAI
-from langchain.memory import FileChatMessageHistory
-from langchain.schema.runnable.utils import ConfigurableFieldSpec
+from langchain_community.chat_message_histories import FileChatMessageHistory
 from langchain_core import __version__
 from langchain_core.chat_history import BaseChatMessageHistory
 from langchain_core.prompts import ChatPromptTemplate, MessagesPlaceholder
+from langchain_core.runnables import ConfigurableFieldSpec
 from langchain_core.runnables.history import RunnableWithMessageHistory
+from langchain_openai import ChatOpenAI
 from typing_extensions import TypedDict
 
 from langserve import add_routes

examples/configurable_agent_executor/server.py

@@ -17,22 +17,22 @@
 from typing import Any, AsyncIterator, Dict, List, Optional, cast
 
 from fastapi import FastAPI
-from langchain.agents import AgentExecutor, tool
+from langchain.agents import AgentExecutor
 from langchain.agents.format_scratchpad import format_to_openai_functions
 from langchain.agents.output_parsers import OpenAIFunctionsAgentOutputParser
-from langchain.chat_models import ChatOpenAI
-from langchain.embeddings import OpenAIEmbeddings
-from langchain.prompts import ChatPromptTemplate, MessagesPlaceholder
 from langchain.pydantic_v1 import BaseModel
-from langchain.tools.render import format_tool_to_openai_function
-from langchain.vectorstores import FAISS
+from langchain_community.vectorstores import FAISS
+from langchain_core.prompts import ChatPromptTemplate, MessagesPlaceholder
 from langchain_core.runnables import (
     ConfigurableField,
     ConfigurableFieldSpec,
     Runnable,
     RunnableConfig,
 )
 from langchain_core.runnables.utils import Input, Output
+from langchain_core.tools import tool
+from langchain_core.utils.function_calling import format_tool_to_openai_function
+from langchain_openai import ChatOpenAI, OpenAIEmbeddings
 
 from langserve import add_routes
 

examples/configurable_chain/server.py

@@ -10,10 +10,10 @@
 
 from fastapi import FastAPI, HTTPException, Request
 from fastapi.middleware.cors import CORSMiddleware
-from langchain.chat_models import ChatOpenAI
-from langchain.prompts import PromptTemplate
-from langchain.schema.output_parser import StrOutputParser
-from langchain.schema.runnable import ConfigurableField
+from langchain_core.output_parsers import StrOutputParser
+from langchain_core.prompts import PromptTemplate
+from langchain_core.runnables import ConfigurableField
+from langchain_openai import ChatOpenAI
 
 from langserve import add_routes
 

examples/configurable_retrieval/server.py

@@ -3,17 +3,18 @@
 from typing import Any, Iterable, List, Optional, Type
 
 from fastapi import FastAPI
-from langchain.embeddings import OpenAIEmbeddings
-from langchain.schema import Document
-from langchain.schema.embeddings import Embeddings
-from langchain.schema.retriever import BaseRetriever
-from langchain.schema.runnable import (
+from langchain.schema.vectorstore import VST
+from langchain_community.vectorstores import FAISS
+from langchain_core.documents import Document
+from langchain_core.embeddings import Embeddings
+from langchain_core.retrievers import BaseRetriever
+from langchain_core.runnables import (
     ConfigurableFieldSingleOption,
     RunnableConfig,
     RunnableSerializable,
 )
-from langchain.schema.vectorstore import VST
-from langchain.vectorstores import FAISS, VectorStore
+from langchain_core.vectorstores import VectorStore
+from langchain_openai import OpenAIEmbeddings
 
 from langserve import add_routes
 from langserve.pydantic_v1 import BaseModel, Field

examples/conversational_retrieval_chain/server.py

@@ -13,14 +13,11 @@
 from typing import List, Tuple
 
 from fastapi import FastAPI
-from langchain.chat_models import ChatOpenAI
-from langchain.embeddings import OpenAIEmbeddings
-from langchain.prompts import ChatPromptTemplate
-from langchain.prompts.prompt import PromptTemplate
-from langchain.schema import format_document
-from langchain.schema.output_parser import StrOutputParser
-from langchain.schema.runnable import RunnableMap, RunnablePassthrough
-from langchain.vectorstores import FAISS
+from langchain_community.vectorstores import FAISS
+from langchain_core.output_parsers import StrOutputParser
+from langchain_core.prompts import ChatPromptTemplate, PromptTemplate, format_document
+from langchain_core.runnables import RunnableMap, RunnablePassthrough
+from langchain_openai import ChatOpenAI, OpenAIEmbeddings
 
 from langserve import add_routes
 from langserve.pydantic_v1 import BaseModel, Field

examples/file_processing/server.py

@@ -15,10 +15,10 @@
 import base64
 
 from fastapi import FastAPI
-from langchain.document_loaders.blob_loaders import Blob
-from langchain.document_loaders.parsers.pdf import PDFMinerParser
 from langchain.pydantic_v1 import Field
-from langchain.schema.runnable import RunnableLambda
+from langchain_community.document_loaders.parsers.pdf import PDFMinerParser
+from langchain_core.document_loaders import Blob
+from langchain_core.runnables import RunnableLambda
 
 from langserve import CustomUserType, add_routes
 

examples/llm/server.py

@@ -2,7 +2,8 @@
 """Example LangChain server exposes multiple runnables (LLMs in this case)."""
 
 from fastapi import FastAPI
-from langchain.chat_models import ChatAnthropic, ChatOpenAI
+from langchain_anthropic import ChatAnthropic
+from langchain_openai import ChatOpenAI
 
 from langserve import add_routes
 

examples/passthrough_dict/server.py

@@ -4,9 +4,9 @@
 from typing import Any, Callable, Dict, List, Optional, TypedDict
 
 from fastapi import FastAPI
-from langchain.chat_models import ChatOpenAI
-from langchain.prompts import ChatPromptTemplate
-from langchain.schema.runnable import RunnableMap, RunnablePassthrough
+from langchain_core.prompts import ChatPromptTemplate
+from langchain_core.runnables import RunnableParallel, RunnablePassthrough
+from langchain_openai import ChatOpenAI
 
 from langserve import add_routes
 
@@ -43,7 +43,7 @@ def _project_dict(
 
 underlying_chain = prompt | model
 
-wrapped_chain = RunnableMap(
+wrapped_chain = RunnableParallel(
     {
         "output": _create_projection(exclude_keys=["info"]) | underlying_chain,
         "info": _create_projection(include_keys=["info"]),

examples/retrieval/server.py

@@ -1,8 +1,8 @@
 #!/usr/bin/env python
 """Example LangChain server exposes a retriever."""
 from fastapi import FastAPI
-from langchain.embeddings import OpenAIEmbeddings
-from langchain.vectorstores import FAISS
+from langchain_community.vectorstores import FAISS
+from langchain_openai import OpenAIEmbeddings
 
 from langserve import add_routes
 

examples/router/server.py

@@ -9,7 +9,8 @@
 https://fastapi.tiangolo.com/tutorial/bigger-applications/
 """
 from fastapi import APIRouter, FastAPI
-from langchain.chat_models import ChatAnthropic, ChatOpenAI
+from langchain_anthropic import ChatAnthropic
+from langchain_openai import ChatOpenAI
 
 from langserve import add_routes
 

examples/widgets/chat/message_list/server.py

@@ -6,7 +6,7 @@
 
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
-from langchain.chat_models import ChatAnthropic
+from langchain_anthropic import ChatAnthropic
 from langchain_core.messages import AIMessage, HumanMessage, SystemMessage
 from langchain_core.output_parsers import StrOutputParser
 from langchain_core.prompts import ChatPromptTemplate, MessagesPlaceholder

examples/widgets/chat/tuples/server.py

@@ -6,18 +6,17 @@
 
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
-from langchain.chat_models.openai import ChatOpenAI
-from langchain.document_loaders.blob_loaders import Blob
-from langchain.document_loaders.parsers.pdf import PDFMinerParser
 from langchain.pydantic_v1 import BaseModel, Field
-from langchain.schema.messages import (
+from langchain_community.document_loaders.parsers.pdf import PDFMinerParser
+from langchain_core.document_loaders import Blob
+from langchain_core.messages import (
     AIMessage,
     BaseMessage,
     FunctionMessage,
     HumanMessage,
 )
-from langchain.schema.runnable import RunnableLambda
-from langchain_core.runnables import RunnableParallel
+from langchain_core.runnables import RunnableLambda, RunnableParallel
+from langchain_openai import ChatOpenAI
 
 from langserve import CustomUserType
 from langserve.server import add_routes