Removes | char from type hints to be compatible with Python 3.9 (neo4j#387)

* Removes | char from type hints to be compatible with Python 3.9

* Replaced Union types with Optional

* Missed one

Author: alexthomas93

src/neo4j_graphrag/experimental/components/entity_relation_extractor.py

@@ -187,7 +187,7 @@ class LLMEntityRelationExtractor(EntityRelationExtractor):
     def __init__(
         self,
         llm: LLMInterface,
-        prompt_template: ERExtractionTemplate | str = ERExtractionTemplate(),
+        prompt_template: Union[ERExtractionTemplate, str] = ERExtractionTemplate(),
         create_lexical_graph: bool = True,
         on_error: OnError = OnError.RAISE,
         max_concurrency: int = 5,
@@ -291,7 +291,7 @@ async def run(
         chunks: TextChunks,
         document_info: Optional[DocumentInfo] = None,
         lexical_graph_config: Optional[LexicalGraphConfig] = None,
-        schema: Union[GraphSchema, None] = None,
+        schema: Optional[GraphSchema] = None,
         examples: str = "",
         **kwargs: Any,
     ) -> Neo4jGraph:

src/neo4j_graphrag/experimental/pipeline/component.py

@@ -15,12 +15,12 @@
 from __future__ import annotations
 
 import inspect
-from typing import Any, get_type_hints
+from typing import Any, Union, get_type_hints
 
 from pydantic import BaseModel
 
-from neo4j_graphrag.experimental.pipeline.types.context import RunContext
 from neo4j_graphrag.experimental.pipeline.exceptions import PipelineDefinitionError
+from neo4j_graphrag.experimental.pipeline.types.context import RunContext
 from neo4j_graphrag.utils.validation import issubclass_safe
 
 
@@ -80,8 +80,8 @@ class Component(metaclass=ComponentMeta):
     # these variables are filled by the metaclass
     # added here for the type checker
     # DO NOT CHANGE
-    component_inputs: dict[str, dict[str, str | bool]]
-    component_outputs: dict[str, dict[str, str | bool | type]]
+    component_inputs: dict[str, dict[str, Union[str, bool]]]
+    component_outputs: dict[str, dict[str, Union[str, bool, type]]]
 
     async def run(self, *args: Any, **kwargs: Any) -> DataModel:
         """Run the component and return its result.

src/neo4j_graphrag/experimental/pipeline/config/base.py

@@ -17,7 +17,7 @@
 from __future__ import annotations
 
 import logging
-from typing import Any
+from typing import Any, Optional
 
 from pydantic import BaseModel, PrivateAttr
 
@@ -58,5 +58,5 @@ def resolve_params(self, params: dict[str, ParamConfig]) -> dict[str, Any]:
             for param_name, param in params.items()
         }
 
-    def parse(self, resolved_data: dict[str, Any] | None = None) -> Any:
+    def parse(self, resolved_data: Optional[dict[str, Any]] = None) -> Any:
         raise NotImplementedError()

src/neo4j_graphrag/experimental/pipeline/config/object_config.py

@@ -31,15 +31,7 @@
 
 import importlib
 import logging
-from typing import (
-    Any,
-    ClassVar,
-    Generic,
-    Optional,
-    TypeVar,
-    Union,
-    cast,
-)
+from typing import Any, ClassVar, Generic, Optional, TypeVar, Union, cast
 
 import neo4j
 from pydantic import (
@@ -58,7 +50,6 @@
 from neo4j_graphrag.llm import LLMInterface
 from neo4j_graphrag.utils.validation import issubclass_safe
 
-
 logger = logging.getLogger(__name__)
 
 
@@ -73,7 +64,7 @@ class ObjectConfig(AbstractConfig, Generic[T]):
     and its constructor parameters.
     """
 
-    class_: str | None = Field(default=None, validate_default=True)
+    class_: Optional[str] = Field(default=None, validate_default=True)
     """Path to class to be instantiated."""
     params_: dict[str, ParamConfig] = {}
     """Initialization parameters."""
@@ -128,7 +119,7 @@ def _get_class(cls, class_path: str, optional_module: Optional[str] = None) -> t
             raise ValueError(f"Could not find {class_name} in {module_name}")
         return cast(type, klass)
 
-    def parse(self, resolved_data: dict[str, Any] | None = None) -> T:
+    def parse(self, resolved_data: Optional[dict[str, Any]] = None) -> T:
         """Import `class_`, resolve `params_` and instantiate object."""
         self._global_data = resolved_data or {}
         logger.debug(f"OBJECT_CONFIG: parsing {self} using {resolved_data}")
@@ -162,7 +153,7 @@ def validate_class(cls, class_: Any) -> str:
         # not used
         return "not used"
 
-    def parse(self, resolved_data: dict[str, Any] | None = None) -> neo4j.Driver:
+    def parse(self, resolved_data: Optional[dict[str, Any]] = None) -> neo4j.Driver:
         params = self.resolve_params(self.params_)
         # we know these params are there because of the required params validator
         uri = params.pop("uri")
@@ -185,7 +176,7 @@ class Neo4jDriverType(RootModel):  # type: ignore[type-arg]
 
     model_config = ConfigDict(arbitrary_types_allowed=True)
 
-    def parse(self, resolved_data: dict[str, Any] | None = None) -> neo4j.Driver:
+    def parse(self, resolved_data: Optional[dict[str, Any]] = None) -> neo4j.Driver:
         if isinstance(self.root, neo4j.Driver):
             return self.root
         # self.root is a Neo4jDriverConfig object
@@ -212,7 +203,7 @@ class LLMType(RootModel):  # type: ignore[type-arg]
 
     model_config = ConfigDict(arbitrary_types_allowed=True)
 
-    def parse(self, resolved_data: dict[str, Any] | None = None) -> LLMInterface:
+    def parse(self, resolved_data: Optional[dict[str, Any]] = None) -> LLMInterface:
         if isinstance(self.root, LLMInterface):
             return self.root
         return self.root.parse(resolved_data)
@@ -238,7 +229,7 @@ class EmbedderType(RootModel):  # type: ignore[type-arg]
 
     model_config = ConfigDict(arbitrary_types_allowed=True)
 
-    def parse(self, resolved_data: dict[str, Any] | None = None) -> Embedder:
+    def parse(self, resolved_data: Optional[dict[str, Any]] = None) -> Embedder:
         if isinstance(self.root, Embedder):
             return self.root
         return self.root.parse(resolved_data)
@@ -266,7 +257,7 @@ class ComponentType(RootModel):  # type: ignore[type-arg]
 
     model_config = ConfigDict(arbitrary_types_allowed=True)
 
-    def parse(self, resolved_data: dict[str, Any] | None = None) -> Component:
+    def parse(self, resolved_data: Optional[dict[str, Any]] = None) -> Component:
         if isinstance(self.root, Component):
             return self.root
         return self.root.parse(resolved_data)

src/neo4j_graphrag/experimental/pipeline/config/runner.py

@@ -24,6 +24,7 @@
 from typing import (
     Annotated,
     Any,
+    Optional,
     Union,
 )
 
@@ -37,7 +38,6 @@
 from typing_extensions import Self
 
 from neo4j_graphrag.experimental.pipeline import Pipeline
-from neo4j_graphrag.utils.file_handler import FileHandler
 from neo4j_graphrag.experimental.pipeline.config.pipeline_config import (
     AbstractPipelineConfig,
     PipelineConfig,
@@ -48,6 +48,7 @@
 from neo4j_graphrag.experimental.pipeline.config.types import PipelineType
 from neo4j_graphrag.experimental.pipeline.pipeline import PipelineResult
 from neo4j_graphrag.experimental.pipeline.types.definitions import PipelineDefinition
+from neo4j_graphrag.utils.file_handler import FileHandler
 from neo4j_graphrag.utils.logging import prettify
 
 logger = logging.getLogger(__name__)
@@ -70,7 +71,9 @@ class PipelineConfigWrapper(BaseModel):
         Annotated[SimpleKGPipelineConfig, Tag(PipelineType.SIMPLE_KG_PIPELINE)],
     ] = Field(discriminator=Discriminator(_get_discriminator_value))
 
-    def parse(self, resolved_data: dict[str, Any] | None = None) -> PipelineDefinition:
+    def parse(
+        self, resolved_data: Optional[dict[str, Any]] = None
+    ) -> PipelineDefinition:
         logger.debug("PIPELINE_CONFIG: start parsing config...")
         return self.config.parse(resolved_data)
 
@@ -90,7 +93,7 @@ class PipelineRunner:
     def __init__(
         self,
         pipeline_definition: PipelineDefinition,
-        config: AbstractPipelineConfig | None = None,
+        config: Optional[AbstractPipelineConfig] = None,
         do_cleaning: bool = False,
     ) -> None:
         self.config = config
@@ -100,7 +103,9 @@ def __init__(
 
     @classmethod
     def from_config(
-        cls, config: AbstractPipelineConfig | dict[str, Any], do_cleaning: bool = False
+        cls,
+        config: Union[AbstractPipelineConfig, dict[str, Any]],
+        do_cleaning: bool = False,
     ) -> Self:
         wrapper = PipelineConfigWrapper.model_validate({"config": config})
         logger.debug(

src/neo4j_graphrag/experimental/pipeline/orchestrator.py

@@ -19,15 +19,15 @@
 import uuid
 import warnings
 from functools import partial
-from typing import TYPE_CHECKING, Any, AsyncGenerator
+from typing import TYPE_CHECKING, Any, AsyncGenerator, Optional
 
-from neo4j_graphrag.experimental.pipeline.types.context import RunContext
 from neo4j_graphrag.experimental.pipeline.exceptions import (
     PipelineDefinitionError,
     PipelineMissingDependencyError,
     PipelineStatusUpdateError,
 )
 from neo4j_graphrag.experimental.pipeline.notification import EventNotifier
+from neo4j_graphrag.experimental.pipeline.types.context import RunContext
 from neo4j_graphrag.experimental.pipeline.types.orchestration import (
     RunResult,
     RunStatus,
@@ -235,7 +235,7 @@ async def get_component_inputs(
         return component_inputs
 
     async def add_result_for_component(
-        self, name: str, result: dict[str, Any] | None, is_final: bool = False
+        self, name: str, result: Optional[dict[str, Any]], is_final: bool = False
     ) -> None:
         """This is where we save the results in the result store and, optionally,
         in the final result store.

src/neo4j_graphrag/experimental/pipeline/pipeline.py

@@ -14,12 +14,12 @@
 #  limitations under the License.
 from __future__ import annotations
 
+import asyncio
 import logging
 import warnings
 from collections import defaultdict
 from timeit import default_timer
-from typing import Any, Optional, AsyncGenerator
-import asyncio
+from typing import Any, AsyncGenerator, Optional
 
 from neo4j_graphrag.utils.logging import prettify
 
@@ -36,27 +36,26 @@
 from neo4j_graphrag.experimental.pipeline.exceptions import (
     PipelineDefinitionError,
 )
+from neo4j_graphrag.experimental.pipeline.notification import (
+    Event,
+    EventCallbackProtocol,
+    EventType,
+    PipelineEvent,
+)
 from neo4j_graphrag.experimental.pipeline.orchestrator import Orchestrator
 from neo4j_graphrag.experimental.pipeline.pipeline_graph import (
     PipelineEdge,
     PipelineGraph,
     PipelineNode,
 )
 from neo4j_graphrag.experimental.pipeline.stores import InMemoryStore, ResultStore
+from neo4j_graphrag.experimental.pipeline.types.context import RunContext
 from neo4j_graphrag.experimental.pipeline.types.definitions import (
     ComponentDefinition,
     ConnectionDefinition,
     PipelineDefinition,
 )
 from neo4j_graphrag.experimental.pipeline.types.orchestration import RunResult
-from neo4j_graphrag.experimental.pipeline.types.context import RunContext
-from neo4j_graphrag.experimental.pipeline.notification import (
-    EventCallbackProtocol,
-    Event,
-    PipelineEvent,
-    EventType,
-)
-
 
 logger = logging.getLogger(__name__)
 
@@ -79,7 +78,7 @@ def __init__(self, name: str, component: Component):
 
     async def execute(
         self, context: RunContext, inputs: dict[str, Any]
-    ) -> RunResult | None:
+    ) -> Optional[RunResult]:
         """Execute the task
 
         Returns:

src/neo4j_graphrag/experimental/pipeline/pipeline_graph.py

@@ -18,7 +18,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Generic, Optional, TypeVar
+from typing import Any, Generic, Optional, TypeVar, Union
 
 
 class PipelineNode:
@@ -124,7 +124,7 @@ def previous_edges(self, node: str) -> list[GenericEdgeType]:
                 res.append(edge)
         return res
 
-    def __contains__(self, node: GenericNodeType | str) -> bool:
+    def __contains__(self, node: Union[GenericNodeType, str]) -> bool:
         if isinstance(node, str):
             return node in self._nodes
         return node.name in self._nodes

src/neo4j_graphrag/generation/graphrag.py

@@ -88,8 +88,8 @@ def search(
         message_history: Optional[Union[List[LLMMessage], MessageHistory]] = None,
         examples: str = "",
         retriever_config: Optional[dict[str, Any]] = None,
-        return_context: bool | None = None,
-        response_fallback: str | None = None,
+        return_context: Optional[bool] = None,
+        response_fallback: Optional[str] = None,
     ) -> RagResultModel:
         """
         .. warning::

src/neo4j_graphrag/generation/types.py

@@ -14,7 +14,7 @@
 #  limitations under the License.
 from __future__ import annotations
 
-from typing import Any, Union
+from typing import Any, Optional
 
 from pydantic import BaseModel, ConfigDict, field_validator
 
@@ -43,11 +43,11 @@ class RagSearchModel(BaseModel):
     examples: str = ""
     retriever_config: dict[str, Any] = {}
     return_context: bool = False
-    response_fallback: str | None = None
+    response_fallback: Optional[str] = None
 
 
 class RagResultModel(BaseModel):
     answer: str
-    retriever_result: Union[RetrieverResult, None] = None
+    retriever_result: Optional[RetrieverResult] = None
 
     model_config = ConfigDict(arbitrary_types_allowed=True)