Commit c6392fa
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Type Hints Implementation (#547)
# Comprehensive Type Hints Implementation
## Summary
This PR implements comprehensive type hints throughout the Pinecone
Python SDK, addressing customer requests for better type safety and IDE
support. The changes include type annotations for all public methods,
decorators, helper functions, and generated code templates, while
adopting modern Python 3.10+ type syntax.
## Problem
The SDK lacked comprehensive type hints, making it difficult for:
- IDEs to provide accurate autocomplete and type checking
- Static type checkers (like mypy) to validate code correctness
- Developers to understand expected parameter and return types
- Customers who rely on type hints for better development experience
## Solution
Implemented comprehensive type hints across the entire SDK, including:
- Return type annotations for all public methods in `Pinecone`,
`PineconeAsyncio`, `Index`, `IndexAsyncio`, and `IndexGRPC`
- Type hints for decorators using `ParamSpec` and `TypeVar` for proper
signature preservation
- Context manager type hints (`__enter__`, `__exit__`, `__aenter__`,
`__aexit__`)
- Generator and async generator return types
- Helper function type annotations
- Modern Python 3.10+ syntax (`X | Y` instead of `Union[X, Y]`, `X |
None` instead of `Optional[X]`)
- Improved OpenAPI code generation templates with return type
annotations and better type inference
## Key Changes
### Core Client Classes
- **`pinecone/pinecone.py`**: Added return types to all methods
(`create_index`, `delete_index`, `list_indexes`, etc.)
- **`pinecone/pinecone_asyncio.py`**: Added return types to all async
methods and context manager support
- **`pinecone/db_data/index.py`**: Added return types to all data
operations (upsert, query, fetch, delete, etc.)
- **`pinecone/db_data/index_asyncio.py`**: Added return types to all
async data operations
- **`pinecone/grpc/index_grpc.py`**: Added return types to all gRPC
operations
### Decorators
- **`pinecone/utils/require_kwargs.py`**: Added `ParamSpec` and
`TypeVar` for proper type preservation
- **`pinecone/utils/error_handling.py`**: Added `ParamSpec` and
`TypeVar` with proper signature handling
### Factory Methods
- **`pinecone/db_data/request_factory.py`**: Added explicit type
annotations to all factory methods
- **`pinecone/db_data/vector_factory.py`**: Added type annotations and
support for `VectorTupleWithMetadata`
- **`pinecone/db_data/sparse_values_factory.py`**: Added type
annotations to helper methods
- **`pinecone/db_data/resources/sync/bulk_import_request_factory.py`**:
Added type annotations
### Helper Functions
- **`pinecone/utils/check_kwargs.py`**: Added type annotations
(`Callable[..., Any]`, `set[str]`, `None`)
- **`pinecone/db_data/sparse_values_factory.py`**: Added type
annotations to `_convert_to_list` and `_validate_list_items_type`
- **`pinecone/db_data/request_factory.py`**: Added type annotations to
`vec_builder`, `_parse_search_rerank`, and `upsert_records_args`
### Modern Type Syntax
- Replaced `Union[X, Y]` with `X | Y` syntax (PEP 604)
- Replaced `Optional[X]` with `X | None` syntax
- Added `from __future__ import annotations` to support deferred
evaluation for Python 3.9 compatibility
### Type Configuration
- **`mypy.ini`**: Configured mypy with gradual strictness settings
- Added `ignore_missing_imports` for optional dependencies (grpc,
aiohttp, aiohttp_retry, urllib3, tqdm)
- Removed unnecessary `ignore_errors` and `ignore_missing_imports`
settings after fixing underlying type issues
- All `pinecone.openapi_support.*` modules now pass mypy without ignores
### Interface Alignment
- Updated `pinecone/db_data/index_asyncio_interface.py` to match
implementation signatures
- Updated `pinecone/db_data/interfaces.py` to use modern type syntax and
correct types
- Fixed method signature mismatches between interfaces and
implementations
- Aligned `AsyncIterator` imports between interface and implementation
(`collections.abc` vs `typing`)
### OpenAPI Support Module Improvements
- **`pinecone/openapi_support/model_utils.py`**:
- Fixed `get_possible_classes()` to handle `Any` (typing special form,
not a class)
- Fixed `get_required_type_classes()` to handle typing generics
(`Dict[str, Any]`, `List[T]`, `Tuple[T, ...]`)
- Added `is_valid_type()` check for `Any` to accept any type when `Any`
is in valid classes
- Fixed type validation for nested dict values with `Any` types
- Added proper handling of typing generics by normalizing to built-in
types
- **`pinecone/openapi_support/serializer.py`**: Fixed return type
handling for file data
- **`pinecone/openapi_support/api_client_utils.py`**: Fixed type
annotations for multipart parameters
- **`pinecone/openapi_support/rest_urllib3.py`**: Added explicit type
for `request_body`
- **`pinecone/openapi_support/asyncio_api_client.py`**: Fixed
`_check_type` parameter handling and dynamic attribute assignment
- **`pinecone/openapi_support/api_client.py`**: Fixed `_check_type`
parameter handling and dynamic attribute assignment
- **`pinecone/openapi_support/endpoint_utils.py`**: Fixed type
annotation for `validations` parameter
### Data Class Improvements
- **`pinecone/db_data/dataclasses/fetch_response.py`**: Changed `usage`
from `Dict[str, int]` to `Optional[Usage]` to align with OpenAPI model
- **`pinecone/db_data/dataclasses/fetch_by_metadata_response.py`**:
Changed `usage` from `Dict[str, int]` to `Optional[Usage]` for
consistency
- **`pinecone/grpc/utils.py`**: Updated parsing functions to pass
`Usage` object directly instead of converting to dict
## User-Facing Impact
### Benefits
- **Better IDE Support**: IDEs can now provide accurate autocomplete,
parameter hints, and type checking
- **Static Type Checking**: Developers can use mypy or other type
checkers to catch type errors before runtime
- **Improved Documentation**: Type hints serve as inline documentation
for expected types
- **Better Developer Experience**: Clearer understanding of API
contracts and expected types
### Breaking Changes
**None** - All changes are additive. Existing code continues to work
without modification.
### Migration Guide
No migration required. The type hints are purely additive and don't
change runtime behavior.
## Technical Details
### Type Inference Improvements
- Added explicit type annotations to factory methods to help mypy infer
return types from OpenAPI model constructors
- Improved `Deserializer.deserialize()` with generic typing for better
type inference
- Added `__new__` method to generated models for better constructor type
inference
### Type Safety
- All public methods now have return type annotations
- Context managers properly typed for `with` and `async with` statements
- Generators and async generators have proper return types
- Decorators preserve function signatures using `ParamSpec`
### Compatibility
- Runtime requires Python 3.10+ (as per existing requirements)
- All type hints are forward-compatible and don't affect runtime
performance
## Testing
- All existing tests pass (388 unit tests)
- Mypy type checking passes with comprehensive coverage
## Files Changed
- **182 files changed**: Core client classes, data operations, gRPC
operations, utilities, generated code templates, and configuration files
- **2,313 insertions, 600 deletions**: Net addition of comprehensive
type annotations
## Technical Achievements
### Reduced `Any` Usage
- Eliminated `Any` return types from generated API methods by adding
explicit return type annotations
- Reduced casting needed in client code through better type inference in
generated models
- Fixed "Returning Any" errors by adding explicit type annotations to
factory methods and helper functions
### Code Generation Quality
- Generated code now includes proper return type annotations for all API
methods
- Post-processing steps ensure generated code passes mypy without manual
fixes
- Template improvements reduce the need for manual type annotations in
client code
## Future Work
- Continue reducing `Any` usage in edge cases
- Consider adding runtime type validation for critical paths (optional,
behind a flag)
- Monitor and improve type coverage as the codebase evolves1 parent 470f57b commit c6392fa
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196 files changed
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lines changed- codegen
- pinecone
- admin
- config
- core/openapi
- admin
- api
- model
- db_control
- api
- model
- db_data
- api
- model
- inference
- api
- model
- oauth
- api
- model
- db_control
- models
- resources
- asyncio
- sync
- db_data
- dataclasses
- resources
- asyncio
- sync
- grpc
- resources
- inference
- openapi_support
- utils
- tests/integration
- grpc/db/data
- helpers
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