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support negative index as sort attributes #2117

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support negative index as sort attributes #2117

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11 changes: 10 additions & 1 deletion src/jinja2/filters.py
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Original file line number Diff line number Diff line change
Expand Up @@ -124,14 +124,23 @@ def attrgetter(item: t.Any) -> list[t.Any]:
return attrgetter


def _try_convert_int(
x: str,
) -> str | int:
try:
return int(x)
except ValueError:
return x


def _prepare_attribute_parts(
attr: str | int | None,
) -> list[str | int]:
if attr is None:
return []

if isinstance(attr, str):
return [int(x) if x.isdigit() else x for x in attr.split(".")]
return [_try_convert_int(x) for x in attr.split(".")]

return [attr]

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