从pdf中提取文本时如何忽略表格及其内容

Question

到目前为止，我已成功从 pdf 文件中提取文本内容。我被困在必须提取表格之外的文本内容（忽略表格及其内容）并需要帮助的地步

PDF可以从here下载

import pdfplumber
pdfinstance = pdfplumber.open(r'\List of Reportable Jurisdictions for 2020 CRS information reporting_9 Feb.pdf')

for epage in range(len(pdfinstance.pages)):
    page = pdfinstance.pages[epage]
    text = page.extract_text(x_tolerance=3, y_tolerance=3)
    print(text)

Answer 1

对于您分享的PDF，可以使用以下代码提取表格外的文字

import pdfplumber


def not_within_bboxes(obj):
    """Check if the object is in any of the table's bbox."""

    def obj_in_bbox(_bbox):
        """See https://github.com/jsvine/pdfplumber/blob/stable/pdfplumber/table.py#L404"""
        v_mid = (obj["top"] + obj["bottom"]) / 2
        h_mid = (obj["x0"] + obj["x1"]) / 2
        x0, top, x1, bottom = _bbox
        return (h_mid >= x0) and (h_mid < x1) and (v_mid >= top) and (v_mid < bottom)

    return not any(obj_in_bbox(__bbox) for __bbox in bboxes)


with pdfplumber.open("file.pdf") as pdf:
    for page in pdf.pages:
        print("\n\n\n\n\nAll text:")
        print(page.extract_text())

        # Get the bounding boxes of the tables on the page.
        bboxes = [
            table.bbox
            for table in page.find_tables(
                table_settings={
                    "vertical_strategy": "explicit",
                    "horizontal_strategy": "explicit",
                    "explicit_vertical_lines": page.curves + page.edges,
                    "explicit_horizontal_lines": page.curves + page.edges,
                }
            )
        ]

        print("\n\n\n\n\nText outside the tables:")
        print(page.filter(not_within_bboxes).extract_text())

我正在使用pdfplumber 提供的.filter() 方法删除任何落在任何表（在not_within_bboxes(...) 中）的边界框内的对象，并创建页面的过滤版本，该版本将只包含那些位于任何表格之外的对象。