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chore: add generator return type hints to query/llm/text_utils.py #2329

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chore: add generator return type hints to query/llm/text_utils.py #2329

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chore: add generator return type hints to query/llm/text_utils.py
ilias-laoukili Apr 20, 2026
c17e272
chore: add semver change document
ilias-laoukili Apr 21, 2026
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4 changes: 2 additions & 2 deletions packages/graphrag/graphrag/query/llm/text_utils.py
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Expand Up @@ -17,7 +17,7 @@
logger = logging.getLogger(__name__)


def batched(iterable: Iterator, n: int):
def batched(iterable: Iterator, n: int) -> Iterator[tuple]:
"""
Batch data into tuples of length n. The last batch may be shorter.
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Copilot AI Apr 21, 2026

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batched is annotated as returning Iterator[tuple], but tuple is a generic type and leaving it un-parameterized loses most of the downstream type-safety (and may trigger "missing type parameters" warnings in stricter mypy/pyright configs). Since this helper preserves element type, consider making it generic (e.g., T = TypeVar('T')) and typing the signature as iterable: Iterable[T] (or Iterator[T]) with a return of Iterator[tuple[T, ...]] to accurately reflect variable-length batches while keeping element types.

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Expand All @@ -32,7 +32,7 @@ def batched(iterable: Iterator, n: int):
yield batch


def chunk_text(text: str, max_tokens: int, tokenizer: Tokenizer | None = None):
def chunk_text(text: str, max_tokens: int, tokenizer: Tokenizer | None = None) -> Iterator[str]:
"""Chunk text by token length."""
if tokenizer is None:
tokenizer = get_tokenizer()
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