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DM-53212: Improve type annotations for sequence_to_string #238

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DM-53212: Improve type annotations for sequence_to_string #238

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4 changes: 2 additions & 2 deletions python/lsst/utils/iteration.py
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Original file line number Diff line number Diff line change
Expand Up @@ -17,7 +17,7 @@
__all__ = ["chunk_iterable", "ensure_iterable", "isplit", "sequence_to_string"]

import itertools
from collections.abc import Iterable, Iterator, Mapping
from collections.abc import Iterable, Iterator, Mapping, Sequence
from typing import Any, TypeGuard, TypeVar


Expand Down Expand Up @@ -207,7 +207,7 @@ def _is_list_of_ints(values: list[int | str]) -> TypeGuard[list[int]]:
return all(isinstance(v, int) for v in values)


def sequence_to_string(values: list[int | str]) -> str:
def sequence_to_string(values: Sequence[int | str]) -> str:
"""Convert a list of integers or strings into a compact string
representation by merging consecutive values or sequences.

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