core: Cleanup pyproject (#31857)

* Reorganize some toml properties
* Fix some E501: line too long

Co-authored-by: Mason Daugherty <mason@langchain.dev>

libs/core/pyproject.toml

@@ -103,11 +103,10 @@ ignore = [
     "PLC0415",
     "PLR2004",
 ]
-unfixable = ["PLW1510",]
-
-flake8-type-checking.runtime-evaluated-base-classes = ["pydantic.BaseModel","langchain_core.load.serializable.Serializable","langchain_core.runnables.base.RunnableSerializable"]
 flake8-annotations.allow-star-arg-any = true
 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",]
 pydocstyle.convention = "google"
 pydocstyle.ignore-var-parameters = true
 pyupgrade.keep-runtime-typing = true
@@ -122,14 +121,8 @@ asyncio_mode = "auto"
 filterwarnings = [ "ignore::langchain_core._api.beta_decorator.LangChainBetaWarning",]
 asyncio_default_fixture_loop_scope = "function"
 
-[tool.ruff.lint.pep8-naming]
-classmethod-decorators = [ "classmethod", "langchain_core.utils.pydantic.pre_init", "pydantic.field_validator", "pydantic.v1.root_validator",]
-
 [tool.ruff.lint.per-file-ignores]
 "langchain_core/utils/mustache.py" = [ "PLW0603",]
-"tests/unit_tests/prompts/test_chat.py" = [ "E501",]
-"tests/unit_tests/runnables/test_runnable.py" = [ "E501",]
-"tests/unit_tests/runnables/test_graph.py" = [ "E501",]
 "tests/unit_tests/test_tools.py" = [ "ARG",]
 "tests/**" = [ "D", "S", "SLF",]
 "scripts/**" = [ "INP", "S",]

libs/core/tests/unit_tests/prompts/test_chat.py

@@ -781,7 +781,8 @@ async def test_chat_tmpl_from_messages_multipart_formatting_with_path() -> None:
     )
     with pytest.raises(
         ValueError,
-        match="Loading images from 'path' has been removed as of 0.3.15 for security reasons.",
+        match="Loading images from 'path' has been removed "
+        "as of 0.3.15 for security reasons.",
     ):
         template.format_messages(
             name="R2D2",
@@ -791,7 +792,8 @@ async def test_chat_tmpl_from_messages_multipart_formatting_with_path() -> None:
 
     with pytest.raises(
         ValueError,
-        match="Loading images from 'path' has been removed as of 0.3.15 for security reasons.",
+        match="Loading images from 'path' has been removed "
+        "as of 0.3.15 for security reasons.",
     ):
         await template.aformat_messages(
             name="R2D2",

libs/core/tests/unit_tests/runnables/test_graph.py

@@ -86,10 +86,12 @@ def test_trim_multi_edge() -> None:
     graph.add_edge(a, last)
     graph.add_edge(start, last)
 
-    graph.trim_first_node()  # should not remove __start__ since it has 2 outgoing edges
+    # trim_first_node() should not remove __start__ since it has 2 outgoing edges
+    graph.trim_first_node()
     assert graph.first_node() is start
 
-    graph.trim_last_node()  # should not remove the __end__ node since it has 2 incoming edges
+    # trim_last_node() should not remove __end__ since it has 2 incoming edges
+    graph.trim_last_node()
     assert graph.last_node() is last
 
 

libs/core/tests/unit_tests/runnables/test_runnable.py

@@ -2785,7 +2785,12 @@ Question:
                 response_metadata={},
             ),
             HumanMessage(
-                content="Context:\n[Document(metadata={}, page_content='foo'), Document(metadata={}, page_content='bar')]\n\nQuestion:\nWhat is your name?",
+                content="Context:\n"
+                "[Document(metadata={}, page_content='foo'), "
+                "Document(metadata={}, page_content='bar')]\n"
+                "\n"
+                "Question:\n"
+                "What is your name?",
                 additional_kwargs={},
                 response_metadata={},
             ),
@@ -4140,7 +4145,8 @@ def test_seq_batch_return_exceptions(mocker: MockerFixture) -> None:
                 if value.startswith(self.fail_starts_with):
                     outputs.append(
                         ValueError(
-                            f"ControlledExceptionRunnable({self.fail_starts_with}) fail for {value}"
+                            f"ControlledExceptionRunnable({self.fail_starts_with}) "
+                            f"fail for {value}"
                         )
                     )
                 else:
@@ -4280,7 +4286,8 @@ async def test_seq_abatch_return_exceptions(mocker: MockerFixture) -> None:
                 if value.startswith(self.fail_starts_with):
                     outputs.append(
                         ValueError(
-                            f"ControlledExceptionRunnable({self.fail_starts_with}) fail for {value}"
+                            f"ControlledExceptionRunnable({self.fail_starts_with}) "
+                            f"fail for {value}"
                         )
                     )
                 else:
@@ -4931,7 +4938,8 @@ def test_runnable_gen_context_config() -> None:
 
 @pytest.mark.skipif(
     sys.version_info < (3, 11),
-    reason="Python 3.10 and below don't support running async tasks in a specific context",
+    reason="Python 3.10 and below don't support running "
+    "async tasks in a specific context",
 )
 async def test_runnable_gen_context_config_async() -> None:
     """Test that a generator can call other runnables with config
@@ -5057,7 +5065,8 @@ def test_runnable_iter_context_config() -> None:
 
 @pytest.mark.skipif(
     sys.version_info < (3, 11),
-    reason="Python 3.10 and below don't support running async tasks in a specific context",
+    reason="Python 3.10 and below don't support running "
+    "async tasks in a specific context",
 )
 async def test_runnable_iter_context_config_async() -> None:
     """Test that a generator can call other runnables with config
@@ -5179,7 +5188,8 @@ def test_runnable_lambda_context_config() -> None:
 
 @pytest.mark.skipif(
     sys.version_info < (3, 11),
-    reason="Python 3.10 and below don't support running async tasks in a specific context",
+    reason="Python 3.10 and below don't support running "
+    "async tasks in a specific context",
 )
 async def test_runnable_lambda_context_config_async() -> None:
     """Test that a function can call other runnables with config