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python - 从pdf中提取文本时如何忽略表格及其内容

问题描述

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 可以从这里下载

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)

标签： pythonpdfpdfplumber

解决方案

For the PDF you have shared, you can use the following code to extract the text outside the tables

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())

I am using the .filter() method provided by pdfplumber to drop any objects that fall inside the bounding box of any of the tables (in not_within_bboxes(...)) and creating a filtered version of the page which will only contain those objects that fall outside any of the tables.

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