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Eugene Yurtsev
2024-09-13 12:50:45 -04:00
parent 05bd2b4618
commit 1bf9a04f26
6 changed files with 66 additions and 164 deletions
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51
libs/core/langchain_core/pydantic_v1/__init__.py
View File

@@ -1,43 +1,14 @@
from importlib import metadata def _raise_import_error() -> None:
"""Raise ImportError with a helpful message."""
from langchain_core._api.deprecation import warn_deprecated raise ImportError(
"Please do not import from langchain_core.pydantic_v1.*."
## Create namespaces for pydantic v1 and v2. "This module was a compatibility shim for pydantic v1, and should "
# This code must stay at the top of the file before other modules may "no longer be used "
# attempt to import pydantic since it adds pydantic_v1 and pydantic_v2 to sys.modules. "Please update the code to import from Pydantic directly. "
#
# This hack is done for the following reasons:
# * Langchain will attempt to remain compatible with both pydantic v1 and v2 since
# both dependencies and dependents may be stuck on either version of v1 or v2.
# * Creating namespaces for pydantic v1 and v2 should allow us to write code that
# unambiguously uses either v1 or v2 API.
# * This change is easier to roll out and roll back.
try:
from pydantic.v1 import * # noqa: F403
except ImportError:
from pydantic import * # type: ignore # noqa: F403
try:
_PYDANTIC_MAJOR_VERSION: int = int(metadata.version("pydantic").split(".")[0])
except metadata.PackageNotFoundError:
_PYDANTIC_MAJOR_VERSION = 0
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_core.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: " "For example, replace imports like: "
"`from langchain_core.pydantic_v1 import BaseModel`\n" "`from langchain_core.pydantic_v1 import BaseModel`\n"
"with: `from pydantic 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"
), _raise_import_error()
)

32
libs/core/langchain_core/pydantic_v1/dataclasses.py
View File

@@ -1,24 +1,14 @@
from langchain_core._api import warn_deprecated def _raise_import_error() -> None:
"""Raise ImportError with a helpful message."""
try: raise ImportError(
from pydantic.v1.dataclasses import * # noqa: F403 "Please do not import from langchain_core.pydantic_v1.*."
except ImportError: "This module was a compatibility shim for pydantic v1, and should "
from pydantic.dataclasses import * # type: ignore # noqa: F403 "no longer be used "
"Please update the code to import from Pydantic directly. "
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_core.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: " "For example, replace imports like: "
"`from langchain_core.pydantic_v1 import BaseModel`\n" "`from langchain_core.pydantic_v1 import BaseModel`\n"
"with: `from pydantic 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"
), _raise_import_error()
)

32
libs/core/langchain_core/pydantic_v1/main.py
View File

@@ -1,24 +1,14 @@
from langchain_core._api import warn_deprecated def _raise_import_error() -> None:
"""Raise ImportError with a helpful message."""
try: raise ImportError(
from pydantic.v1.main import * # noqa: F403 "Please do not import from langchain_core.pydantic_v1.*."
except ImportError: "This module was a compatibility shim for pydantic v1, and should "
from pydantic.main import * # type: ignore # noqa: F403 "no longer be used "
"Please update the code to import from Pydantic directly. "
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_core.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: " "For example, replace imports like: "
"`from langchain_core.pydantic_v1 import BaseModel`\n" "`from langchain_core.pydantic_v1 import BaseModel`\n"
"with: `from pydantic 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"
), _raise_import_error()
)

51
libs/langchain/langchain/pydantic_v1/__init__.py
View File

@@ -1,43 +1,14 @@
from importlib import metadata def _raise_import_error() -> None:
"""Raise ImportError with a helpful message."""
from langchain_core._api import warn_deprecated raise ImportError(
"Please do not import from langchain.pydantic_v1.*."
## Create namespaces for pydantic v1 and v2. "This module was a compatibility shim for pydantic v1, and should "
# This code must stay at the top of the file before other modules may "no longer be used "
# attempt to import pydantic since it adds pydantic_v1 and pydantic_v2 to sys.modules. "Please update the code to import from Pydantic directly. "
#
# This hack is done for the following reasons:
# * Langchain will attempt to remain compatible with both pydantic v1 and v2 since
# both dependencies and dependents may be stuck on either version of v1 or v2.
# * Creating namespaces for pydantic v1 and v2 should allow us to write code that
# unambiguously uses either v1 or v2 API.
# * This change is easier to roll out and roll back.
try:
from pydantic.v1 import * # noqa: F403
except ImportError:
from pydantic import * # type: ignore # noqa: F403
try:
_PYDANTIC_MAJOR_VERSION: int = int(metadata.version("pydantic").split(".")[0])
except metadata.PackageNotFoundError:
_PYDANTIC_MAJOR_VERSION = 0
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: " "For example, replace imports like: "
"`from langchain.pydantic_v1 import BaseModel`\n" "`from langchain.pydantic_v1 import BaseModel`\n"
"with: `from pydantic 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"
), _raise_import_error()
)

32
libs/langchain/langchain/pydantic_v1/dataclasses.py
View File

@@ -1,24 +1,14 @@
from langchain_core._api import warn_deprecated def _raise_import_error() -> None:
"""Raise ImportError with a helpful message."""
try: raise ImportError(
from pydantic.v1.dataclasses import * # noqa: F403 "Please do not import from langchain.pydantic_v1.*."
except ImportError: "This module was a compatibility shim for pydantic v1, and should "
from pydantic.dataclasses import * # type: ignore # noqa: F403 "no longer be used "
"Please update the code to import from Pydantic directly. "
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: " "For example, replace imports like: "
"`from langchain.pydantic_v1 import BaseModel`\n" "`from langchain.pydantic_v1 import BaseModel`\n"
"with: `from pydantic 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"
), _raise_import_error()
)

32
libs/langchain/langchain/pydantic_v1/main.py
View File

@@ -1,24 +1,14 @@
from langchain_core._api import warn_deprecated def _raise_import_error() -> None:
"""Raise ImportError with a helpful message."""
try: raise ImportError(
from pydantic.v1.main import * # noqa: F403 "Please do not import from langchain.pydantic_v1.*."
except ImportError: "This module was a compatibility shim for pydantic v1, and should "
from pydantic.main import * # type: ignore # noqa: F403 "no longer be used "
"Please update the code to import from Pydantic directly. "
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: " "For example, replace imports like: "
"`from langchain.pydantic_v1 import BaseModel`\n" "`from langchain.pydantic_v1 import BaseModel`\n"
"with: `from pydantic 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"
), _raise_import_error()
)