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### Summary Partial solution to #1185. Related to #1222. Creates decorator from `chunk_by_title` cleaning brick. Breaks a document into sections based on the presence of Title elements. Also starts a new section under the following conditions: - If metadata changes, indicating a change in section or page or a switch to processing attachments. If `multipage_sections=True`, sections can span pages. `multipage_sections` defaults to True. - If the length of the section exceeds `new_after_n_chars` characters. The default is 1500. The **chunking function does not split individual elements**, so it's possible for a section to exceed that threshold if an individual element if over `new_after_n_chars characters`, which could occur with a long NarrativeText element. Combines sections under these conditions - Sections under `combine_under_n_chars` characters are combined. The default is 500. ### Testing from unstructured.partition.html import partition_html url = "https://understandingwar.org/backgrounder/russian-offensive-campaign-assessment-august-27-2023-0" chunks = partition_html(url=url, chunking_strategy="by_title") for chunk in chunks: print(chunk) print("\n\n" + "-"*80) input()
153 lines
4.9 KiB
Python
153 lines
4.9 KiB
Python
from unstructured.chunking.title import chunk_by_title
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from unstructured.cleaners.core import clean_extra_whitespace
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from unstructured.documents.elements import Title
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from unstructured.partition.json import partition_json
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from unstructured.partition.rst import partition_rst
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from unstructured.staging.base import elements_to_json
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def test_partition_rst_from_filename(filename="example-docs/README.rst"):
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elements = partition_rst(filename=filename)
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assert elements[0] == Title("Example Docs")
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assert elements[0].metadata.filetype == "text/x-rst"
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for element in elements:
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assert element.metadata.filename == "README.rst"
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def test_partition_rst_from_filename_with_metadata_filename(
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filename="example-docs/README.rst",
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):
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elements = partition_rst(filename=filename, metadata_filename="test")
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assert all(element.metadata.filename == "test" for element in elements)
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def test_partition_rst_from_file(filename="example-docs/README.rst"):
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with open(filename, "rb") as f:
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elements = partition_rst(file=f)
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assert elements[0] == Title("Example Docs")
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assert elements[0].metadata.filetype == "text/x-rst"
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for element in elements:
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assert element.metadata.filename is None
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def test_partition_rst_from_file_with_metadata_filename(
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filename="example-docs/README.rst",
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):
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with open(filename, "rb") as f:
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elements = partition_rst(file=f, metadata_filename="test")
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assert elements[0] == Title("Example Docs")
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for element in elements:
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assert element.metadata.filename == "test"
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def test_partition_rst_from_filename_exclude_metadata(
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filename="example-docs/README.rst",
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):
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elements = partition_rst(filename=filename, include_metadata=False)
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for i in range(len(elements)):
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assert elements[i].metadata.to_dict() == {}
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def test_partition_rst_from_file_exclude_metadata(filename="example-docs/README.rst"):
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with open(filename, "rb") as f:
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elements = partition_rst(file=f, include_metadata=False)
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for i in range(len(elements)):
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assert elements[i].metadata.to_dict() == {}
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def test_partition_rst_metadata_date(
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mocker,
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filename="example-docs/README.rst",
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):
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mocked_last_modification_date = "2029-07-05T09:24:28"
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mocker.patch(
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"unstructured.partition.html.get_last_modified_date",
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return_value=mocked_last_modification_date,
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)
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elements = partition_rst(
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filename=filename,
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)
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assert elements[0].metadata.last_modified == mocked_last_modification_date
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def test_partition_rst_with_custom_metadata_date(
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mocker,
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filename="example-docs/README.rst",
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):
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mocked_last_modification_date = "2029-07-05T09:24:28"
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expected_last_modification_date = "2020-07-05T09:24:28"
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mocker.patch(
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"unstructured.partition.html.get_last_modified_date",
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return_value=mocked_last_modification_date,
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)
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elements = partition_rst(
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filename=filename,
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metadata_last_modified=expected_last_modification_date,
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)
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assert elements[0].metadata.last_modified == expected_last_modification_date
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def test_partition_rst_from_file_metadata_date(
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mocker,
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filename="example-docs/README.rst",
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):
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mocked_last_modification_date = "2029-07-05T09:24:28"
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mocker.patch(
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"unstructured.partition.html.get_last_modified_date_from_file",
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return_value=mocked_last_modification_date,
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)
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with open(filename, "rb") as f:
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elements = partition_rst(
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file=f,
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)
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assert elements[0].metadata.last_modified == mocked_last_modification_date
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def test_partition_rst_from_file_with_custom_metadata_date(
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mocker,
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filename="example-docs/README.rst",
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):
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mocked_last_modification_date = "2029-07-05T09:24:28"
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expected_last_modification_date = "2020-07-05T09:24:28"
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mocker.patch(
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"unstructured.partition.html.get_last_modified_date_from_file",
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return_value=mocked_last_modification_date,
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)
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with open(filename, "rb") as f:
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elements = partition_rst(file=f, metadata_last_modified=expected_last_modification_date)
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assert elements[0].metadata.last_modified == expected_last_modification_date
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def test_partition_rst_with_json(filename="example-docs/README.rst"):
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elements = partition_rst(filename=filename)
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test_elements = partition_json(text=elements_to_json(elements))
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assert len(elements) == len(test_elements)
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assert clean_extra_whitespace(elements[0].text) == clean_extra_whitespace(test_elements[0].text)
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assert elements[0].metadata.filename == test_elements[0].metadata.filename
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for i in range(len(elements)):
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assert elements[i] == test_elements[i]
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def test_add_chunking_strategy_on_partition_rst(filename="example-docs/README.rst"):
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elements = partition_rst(filename=filename)
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chunk_elements = partition_rst(filename, chunking_strategy="by_title")
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chunks = chunk_by_title(elements)
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assert chunk_elements != elements
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assert chunk_elements == chunks
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