| from langchain_core._api import warn_deprecated | |
| try: | |
| from pydantic.v1.main import * # noqa: F403 | |
| except ImportError: | |
| from pydantic.main import * # type: ignore # noqa: F403 | |
| warn_deprecated( | |
| "0.3.0", | |
| removal="1.0.0", | |
| alternative="pydantic.v1 or pydantic", | |
| message=( | |
| "As of langchain-core 0.3.0, LangChain uses pydantic v2 internally. " | |
| "The langchain.pydantic_v1 module was a " | |
| "compatibility shim for pydantic v1, and should no longer be used. " | |
| "Please update the code to import from Pydantic directly.\n\n" | |
| "For example, replace imports like: " | |
| "`from langchain.pydantic_v1 import BaseModel`\n" | |
| "with: `from pydantic import BaseModel`\n" | |
| "or the v1 compatibility namespace if you are working in a code base " | |
| "that has not been fully upgraded to pydantic 2 yet. " | |
| "\tfrom pydantic.v1 import BaseModel\n" | |
| ), | |
| ) | |