feat: add __iter__ support to LayoutElements and Elements for native iteration

Author: pira998

test_unstructured_inference/inference/test_layout_element.py

@@ -1,5 +1,5 @@
-from unstructured_inference.inference.layoutelement import LayoutElement, TextRegion
-
+from unstructured_inference.inference.layoutelement import LayoutElement, LayoutElements, TextRegion
+import numpy as np
 
 def test_layout_element_do_dict(mock_layout_element):
     expected = {
@@ -18,3 +18,33 @@ def test_layout_element_from_region(mock_rectangle):
     region = TextRegion(bbox=mock_rectangle)
 
     assert LayoutElement.from_region(region) == expected
+
+
+def test_layout_elements_iter_support():
+    coords = np.array([[0, 0, 100, 100]])
+    texts = np.array(["sample"])
+    probs = np.array([0.9])
+    class_ids = np.array([0])
+    class_id_map = {0: "Text"}
+    sources = np.array(["test_source"])
+    text_as_html = np.array(["<p>sample</p>"])
+    table_as_cells = np.array([None])
+
+    layout_elements = LayoutElements(
+        element_coords=coords,
+        texts=texts,
+        element_probs=probs,
+        element_class_ids=class_ids,
+        element_class_id_map=class_id_map,
+        sources=sources,
+        text_as_html=text_as_html,
+        table_as_cells=table_as_cells,
+    )
+
+    # New feature test: __iter__() works
+    elements = list(layout_elements)
+    assert len(elements) == 1
+    assert isinstance(elements[0], LayoutElement)
+    assert elements[0].text == "sample"
+    assert elements[0].type == "Text"
+

unstructured_inference/inference/elements.py

@@ -228,6 +228,9 @@ def __post_init__(self):
 
     def __getitem__(self, indices) -> TextRegions:
         return self.slice(indices)
+    
+    def __iter__(self):
+        return self.iter_elements()
 
     def slice(self, indices) -> TextRegions:
         """slice text regions based on indices"""

unstructured_inference/inference/layoutelement.py

@@ -77,6 +77,9 @@ def __eq__(self, other: object) -> bool:
 
     def __getitem__(self, indices):
         return self.slice(indices)
+    
+    def __iter__(self):
+        return self.iter_elements()
 
     def slice(self, indices) -> LayoutElements:
         """slice and return only selected indices"""