fix: remove relative imports (#34680)

standardizing on absolute imports rather than relative across the
codebase

libs/core/langchain_core/_api/__init__.py

@@ -13,20 +13,20 @@ from typing import TYPE_CHECKING
 from langchain_core._import_utils import import_attr
 
 if TYPE_CHECKING:
-    from .beta_decorator import (
+    from langchain_core._api.beta_decorator import (
         LangChainBetaWarning,
         beta,
         suppress_langchain_beta_warning,
         surface_langchain_beta_warnings,
     )
-    from .deprecation import (
+    from langchain_core._api.deprecation import (
         LangChainDeprecationWarning,
         deprecated,
         suppress_langchain_deprecation_warning,
         surface_langchain_deprecation_warnings,
         warn_deprecated,
     )
-    from .path import as_import_path, get_relative_path
+    from langchain_core._api.path import as_import_path, get_relative_path
 
 __all__ = (
     "LangChainBetaWarning",

libs/core/langchain_core/documents/__init__.py

@@ -30,9 +30,9 @@ from typing import TYPE_CHECKING
 from langchain_core._import_utils import import_attr
 
 if TYPE_CHECKING:
-    from .base import Document
-    from .compressor import BaseDocumentCompressor
-    from .transformers import BaseDocumentTransformer
+    from langchain_core.documents.base import Document
+    from langchain_core.documents.compressor import BaseDocumentCompressor
+    from langchain_core.documents.transformers import BaseDocumentTransformer
 
 __all__ = ("BaseDocumentCompressor", "BaseDocumentTransformer", "Document")
 

libs/core/pyproject.toml

@@ -109,6 +109,9 @@ flake8-builtins.ignorelist = ["id", "input", "type"]
 flake8-type-checking.runtime-evaluated-base-classes = [ "pydantic.BaseModel", "langchain_core.load.serializable.Serializable", "langchain_core.runnables.base.RunnableSerializable", "langchain_core.language_models.base.BaseLanguageModel", "langchain_core.outputs.generation.Generation", "langchain_core.tools.base.BaseTool",]
 pep8-naming.classmethod-decorators = [ "classmethod", "langchain_core.utils.pydantic.pre_init", "pydantic.field_validator", "pydantic.v1.root_validator",]
 
+[tool.ruff.lint.flake8-tidy-imports]
+ban-relative-imports = "all"
+
 [tool.ruff.lint.pydocstyle]
 convention = "google"
 ignore-var-parameters = true  # ignore missing documentation for *args and **kwargs parameters

libs/langchain_v1/langchain/agents/middleware/__init__.py

@@ -1,32 +1,29 @@
 """Entrypoint to using [middleware](https://docs.langchain.com/oss/python/langchain/middleware) plugins with [Agents](https://docs.langchain.com/oss/python/langchain/agents)."""  # noqa: E501
 
-from .context_editing import (
-    ClearToolUsesEdit,
-    ContextEditingMiddleware,
-)
-from .file_search import FilesystemFileSearchMiddleware
-from .human_in_the_loop import (
+from langchain.agents.middleware.context_editing import ClearToolUsesEdit, ContextEditingMiddleware
+from langchain.agents.middleware.file_search import FilesystemFileSearchMiddleware
+from langchain.agents.middleware.human_in_the_loop import (
     HumanInTheLoopMiddleware,
     InterruptOnConfig,
 )
-from .model_call_limit import ModelCallLimitMiddleware
-from .model_fallback import ModelFallbackMiddleware
-from .model_retry import ModelRetryMiddleware
-from .pii import PIIDetectionError, PIIMiddleware
-from .shell_tool import (
+from langchain.agents.middleware.model_call_limit import ModelCallLimitMiddleware
+from langchain.agents.middleware.model_fallback import ModelFallbackMiddleware
+from langchain.agents.middleware.model_retry import ModelRetryMiddleware
+from langchain.agents.middleware.pii import PIIDetectionError, PIIMiddleware
+from langchain.agents.middleware.shell_tool import (
     CodexSandboxExecutionPolicy,
     DockerExecutionPolicy,
     HostExecutionPolicy,
     RedactionRule,
     ShellToolMiddleware,
 )
-from .summarization import SummarizationMiddleware
-from .todo import TodoListMiddleware
-from .tool_call_limit import ToolCallLimitMiddleware
-from .tool_emulator import LLMToolEmulator
-from .tool_retry import ToolRetryMiddleware
-from .tool_selection import LLMToolSelectorMiddleware
-from .types import (
+from langchain.agents.middleware.summarization import SummarizationMiddleware
+from langchain.agents.middleware.todo import TodoListMiddleware
+from langchain.agents.middleware.tool_call_limit import ToolCallLimitMiddleware
+from langchain.agents.middleware.tool_emulator import LLMToolEmulator
+from langchain.agents.middleware.tool_retry import ToolRetryMiddleware
+from langchain.agents.middleware.tool_selection import LLMToolSelectorMiddleware
+from langchain.agents.middleware.types import (
     AgentMiddleware,
     AgentState,
     ModelRequest,

libs/langchain_v1/pyproject.toml

@@ -127,6 +127,9 @@ unfixable = [
 flake8-annotations.allow-star-arg-any = true
 allowed-confusables = ["–"]
 
+[tool.ruff.lint.flake8-tidy-imports]
+ban-relative-imports = "all"
+
 [tool.ruff.lint.pydocstyle]
 convention = "google"
 ignore-var-parameters = true  # ignore missing documentation for *args and **kwargs parameters

libs/langchain_v1/tests/unit_tests/agents/conftest.py

@@ -7,7 +7,7 @@ from langgraph.checkpoint.base import BaseCheckpointSaver
 from langgraph.store.base import BaseStore
 from pytest_mock import MockerFixture
 
-from .conftest_checkpointer import (
+from tests.unit_tests.agents.conftest_checkpointer import (
     _checkpointer_memory,
     _checkpointer_postgres,
     _checkpointer_postgres_aio,
@@ -18,7 +18,7 @@ from .conftest_checkpointer import (
     _checkpointer_sqlite,
     _checkpointer_sqlite_aio,
 )
-from .conftest_store import (
+from tests.unit_tests.agents.conftest_store import (
     _store_memory,
     _store_postgres,
     _store_postgres_aio,

libs/langchain_v1/tests/unit_tests/agents/conftest_checkpointer.py

@@ -1,8 +1,6 @@
 from contextlib import asynccontextmanager, contextmanager
 
-from .memory_assert import (
-    MemorySaverAssertImmutable,
-)
+from tests.unit_tests.agents.memory_assert import MemorySaverAssertImmutable
 
 
 @contextmanager

libs/langchain_v1/tests/unit_tests/agents/messages.py

@@ -11,7 +11,7 @@ from typing import Any
 
 from langchain_core.messages import HumanMessage, ToolMessage
 
-from .any_str import AnyStr
+from tests.unit_tests.agents.any_str import AnyStr
 
 
 def _AnyIdHumanMessage(**kwargs: Any) -> HumanMessage:  # noqa: N802

libs/langchain_v1/tests/unit_tests/agents/test_agent_name.py

@@ -10,8 +10,7 @@ from langchain_core.messages import AIMessage, HumanMessage
 from langchain_core.tools import tool
 
 from langchain.agents import create_agent
-
-from .model import FakeToolCallingModel
+from tests.unit_tests.agents.model import FakeToolCallingModel
 
 
 @tool

libs/langchain_v1/tests/unit_tests/agents/test_create_agent_tool_validation.py

@@ -10,8 +10,7 @@ from langgraph.store.memory import InMemoryStore
 from langchain.agents import AgentState, create_agent
 from langchain.tools import InjectedState
 from langchain.tools import tool as dec_tool
-
-from .model import FakeToolCallingModel
+from tests.unit_tests.agents.model import FakeToolCallingModel
 
 
 @pytest.mark.skipif(

libs/langchain_v1/tests/unit_tests/agents/test_injected_runtime_create_agent.py

@@ -26,8 +26,7 @@ from langgraph.store.memory import InMemoryStore
 from langchain.agents import create_agent
 from langchain.agents.middleware.types import AgentMiddleware, AgentState
 from langchain.tools import InjectedState, ToolRuntime
-
-from .model import FakeToolCallingModel
+from tests.unit_tests.agents.model import FakeToolCallingModel
 
 
 def test_tool_runtime_basic_injection() -> None:

libs/langchain_v1/tests/unit_tests/agents/test_kwargs_tool_runtime_injection.py

@@ -9,8 +9,7 @@ from langchain_core.tools import StructuredTool
 from pydantic import BaseModel, Field
 
 from langchain.agents import create_agent
-
-from .model import FakeToolCallingModel
+from tests.unit_tests.agents.model import FakeToolCallingModel
 
 
 class ArgsSchema(BaseModel):

libs/langchain_v1/tests/unit_tests/agents/test_react_agent.py

@@ -44,9 +44,9 @@
 #     _infer_handled_types,
 # )
 
-# from .any_str import AnyStr
-# from .messages import _AnyIdHumanMessage, _AnyIdToolMessage
-# from .model import FakeToolCallingModel
+# from tests.unit_tests.agents.any_str import AnyStr
+# from tests.unit_tests.agents.messages import _AnyIdHumanMessage, _AnyIdToolMessage
+# from tests.unit_tests.agents.model import FakeToolCallingModel
 
 # pytestmark = pytest.mark.anyio
 

libs/langchain_v1/tests/unit_tests/agents/test_return_direct_graph.py

@@ -4,8 +4,7 @@ from langchain_core.tools import tool
 from syrupy.assertion import SnapshotAssertion
 
 from langchain.agents.factory import create_agent
-
-from .model import FakeToolCallingModel
+from tests.unit_tests.agents.model import FakeToolCallingModel
 
 
 def test_agent_graph_without_return_direct_tools(snapshot: SnapshotAssertion) -> None:

libs/langchain_v1/tests/unit_tests/agents/test_state_schema.py

@@ -17,8 +17,7 @@ from langchain.agents.middleware.types import AgentMiddleware, AgentState
 # Cannot move ToolRuntime to TYPE_CHECKING as parameters of @tool annotated functions
 # are inspected at runtime.
 from langchain.tools import ToolRuntime  # noqa: TC001
-
-from .model import FakeToolCallingModel
+from tests.unit_tests.agents.model import FakeToolCallingModel
 
 
 @tool

libs/langchain_v1/uv.lock

@@ -1863,7 +1863,7 @@ wheels = [
 
 [[package]]
 name = "langchain"
-version = "1.2.2"
+version = "1.2.3"
 source = { editable = "." }
 dependencies = [
     { name = "langchain-core" },

libs/standard-tests/langchain_tests/integration_tests/__init__.py

@@ -19,13 +19,19 @@ modules = [
 for module in modules:
     pytest.register_assert_rewrite(f"langchain_tests.integration_tests.{module}")
 
-from .base_store import BaseStoreAsyncTests, BaseStoreSyncTests
-from .cache import AsyncCacheTestSuite, SyncCacheTestSuite
-from .chat_models import ChatModelIntegrationTests
-from .embeddings import EmbeddingsIntegrationTests
-from .retrievers import RetrieversIntegrationTests
-from .tools import ToolsIntegrationTests
-from .vectorstores import VectorStoreIntegrationTests
+from langchain_tests.integration_tests.base_store import (
+    BaseStoreAsyncTests,
+    BaseStoreSyncTests,
+)
+from langchain_tests.integration_tests.cache import (
+    AsyncCacheTestSuite,
+    SyncCacheTestSuite,
+)
+from langchain_tests.integration_tests.chat_models import ChatModelIntegrationTests
+from langchain_tests.integration_tests.embeddings import EmbeddingsIntegrationTests
+from langchain_tests.integration_tests.retrievers import RetrieversIntegrationTests
+from langchain_tests.integration_tests.tools import ToolsIntegrationTests
+from langchain_tests.integration_tests.vectorstores import VectorStoreIntegrationTests
 
 __all__ = [
     "AsyncCacheTestSuite",

libs/standard-tests/langchain_tests/unit_tests/__init__.py

@@ -15,8 +15,8 @@ modules = [
 for module in modules:
     pytest.register_assert_rewrite(f"langchain_tests.unit_tests.{module}")
 
-from .chat_models import ChatModelUnitTests
-from .embeddings import EmbeddingsUnitTests
-from .tools import ToolsUnitTests
+from langchain_tests.unit_tests.chat_models import ChatModelUnitTests
+from langchain_tests.unit_tests.embeddings import EmbeddingsUnitTests
+from langchain_tests.unit_tests.tools import ToolsUnitTests
 
 __all__ = ["ChatModelUnitTests", "EmbeddingsUnitTests", "ToolsUnitTests"]

libs/standard-tests/pyproject.toml

@@ -90,6 +90,9 @@ flake8-annotations.mypy-init-return = true
 flake8-type-checking.runtime-evaluated-base-classes = ["pydantic.BaseModel","langchain_core.load.serializable.Serializable","langchain_core.runnables.base.RunnableSerializable"]
 pep8-naming.classmethod-decorators = [ "classmethod", "langchain_core.utils.pydantic.pre_init", "pydantic.field_validator", "pydantic.v1.root_validator",]
 
+[tool.ruff.lint.flake8-tidy-imports]
+ban-relative-imports = "all"
+
 [tool.ruff.lint.pydocstyle]
 convention = "google"
 ignore-var-parameters = true  # ignore missing documentation for *args and **kwargs parameters

libs/standard-tests/tests/unit_tests/test_custom_chat_model.py

@@ -8,8 +8,7 @@ import pytest
 
 from langchain_tests.integration_tests import ChatModelIntegrationTests
 from langchain_tests.unit_tests import ChatModelUnitTests
-
-from .custom_chat_model import ChatParrotLink
+from tests.unit_tests.custom_chat_model import ChatParrotLink
 
 if TYPE_CHECKING:
     from langchain_core.language_models.chat_models import BaseChatModel

libs/standard-tests/uv.lock

@@ -321,7 +321,7 @@ wheels = [
 
 [[package]]
 name = "langchain-core"
-version = "1.2.5"
+version = "1.2.6"
 source = { editable = "../core" }
 dependencies = [
     { name = "jsonpatch" },