multiple: pydantic 2 compatibility, v0.3 (#26443)

Signed-off-by: ChengZi <chen.zhang@zilliz.com>
Co-authored-by: Eugene Yurtsev <eyurtsev@gmail.com>
Co-authored-by: Bagatur <22008038+baskaryan@users.noreply.github.com>
Co-authored-by: Dan O'Donovan <dan.odonovan@gmail.com>
Co-authored-by: Tom Daniel Grande <tomdgrande@gmail.com>
Co-authored-by: Grande <Tom.Daniel.Grande@statsbygg.no>
Co-authored-by: Bagatur <baskaryan@gmail.com>
Co-authored-by: ccurme <chester.curme@gmail.com>
Co-authored-by: Harrison Chase <hw.chase.17@gmail.com>
Co-authored-by: Tomaz Bratanic <bratanic.tomaz@gmail.com>
Co-authored-by: ZhangShenao <15201440436@163.com>
Co-authored-by: Friso H. Kingma <fhkingma@gmail.com>
Co-authored-by: ChengZi <chen.zhang@zilliz.com>
Co-authored-by: Nuno Campos <nuno@langchain.dev>
Co-authored-by: Morgante Pell <morgantep@google.com>

libs/cli/langchain_cli/integration_template/integration_template/chat_models.py

@@ -116,7 +116,7 @@ class Chat__ModuleName__(BaseChatModel):
     Tool calling:
         .. code-block:: python
 
-            from langchain_core.pydantic_v1 import BaseModel, Field
+            from pydantic import BaseModel, Field
 
             class GetWeather(BaseModel):
                 '''Get the current weather in a given location'''
@@ -144,7 +144,7 @@ class Chat__ModuleName__(BaseChatModel):
 
             from typing import Optional
 
-            from langchain_core.pydantic_v1 import BaseModel, Field
+            from pydantic import BaseModel, Field
 
             class Joke(BaseModel):
                 '''Joke to tell user.'''

libs/cli/langchain_cli/integration_template/integration_template/tools.py

@@ -5,8 +5,8 @@ from typing import Optional, Type
 from langchain_core.callbacks import (
     CallbackManagerForToolRun,
 )
-from langchain_core.pydantic_v1 import BaseModel
 from langchain_core.tools import BaseTool
+from pydantic import BaseModel
 
 
 class __ModuleName__Input(BaseModel):
@@ -62,7 +62,7 @@ class __ModuleName__Tool(BaseTool):
         .. code-block:: python
 
             # TODO: output of invocation
-    """ # noqa: E501
+    """  # noqa: E501
 
     # TODO: Set tool name and description
     name: str = "TODO: Tool name"

libs/cli/langchain_cli/integration_template/pyproject.toml

@@ -12,8 +12,8 @@ license = "MIT"
 "Release Notes" = "https://github.com/langchain-ai/langchain/releases?q=tag%3A%22__package_name_short__%3D%3D0%22&expanded=true"
 
 [tool.poetry.dependencies]
-python = ">=3.8.1,<4.0"
-langchain-core = "^0.2.0"
+python = ">=3.9,<4.0"
+langchain-core = "^0.3.0.dev"
 
 [tool.poetry.group.test]
 optional = true

libs/cli/langchain_cli/integration_template/scripts/check_pydantic.sh

@@ -1,27 +0,0 @@
-#!/bin/bash
-#
-# This script searches for lines starting with "import pydantic" or "from pydantic"
-# in tracked files within a Git repository.
-#
-# Usage: ./scripts/check_pydantic.sh /path/to/repository
-
-# Check if a path argument is provided
-if [ $# -ne 1 ]; then
-  echo "Usage: $0 /path/to/repository"
-  exit 1
-fi
-
-repository_path="$1"
-
-# Search for lines matching the pattern within the specified repository
-result=$(git -C "$repository_path" grep -E '^import pydantic|^from pydantic')
-
-# Check if any matching lines were found
-if [ -n "$result" ]; then
-  echo "ERROR: The following lines need to be updated:"
-  echo "$result"
-  echo "Please replace the code with an import from langchain_core.pydantic_v1."
-  echo "For example, replace 'from pydantic import BaseModel'"
-  echo "with 'from langchain_core.pydantic_v1 import BaseModel'"
-  exit 1
-fi