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Fix mask geometry to ensure consistent MultiPolygon output across Python version #1978

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Fix mask geometry to ensure consistent MultiPolygon output across Python version #1978

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8 changes: 7 additions & 1 deletion libs/labelbox/src/labelbox/data/annotation_types/geometry/mask.py
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Original file line number Diff line number Diff line change
Expand Up @@ -62,7 +62,13 @@ def geometry(self) -> Dict[str, Tuple[int, int, int]]:
if not holes.is_valid:
holes = holes.buffer(0)

return external_polygons.difference(holes).__geo_interface__
result = external_polygons.difference(holes)

# Ensure consistent MultiPolygon output across Python versions
if hasattr(result, "geom_type") and result.geom_type == "Polygon":
result = MultiPolygon([result])

return result.__geo_interface__

def draw(
self,
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