如何用Python提取PDF文本并关联保险合同特定字段值

已使用的PDF文本提取代码 #

我用以下基于pdfminer的Python代码提取保险合同PDF中的文本（字符串形式）：

import io
from pdfminer.converter import TextConverter
from pdfminer.pdfinterp import PDFPageInterpreter
from pdfminer.pdfinterp import PDFResourceManager
from pdfminer.pdfpage import PDFPage


def extract_text_by_page(pdf_path):
    with open(pdf_path, 'rb') as fh:
        for page in PDFPage.get_pages(fh,
                                      caching=True,
                                      check_extractable=False):
            resource_manager = PDFResourceManager()
            fake_file_handle = io.StringIO()

            converter = TextConverter(resource_manager,
                                      fake_file_handle)

            page_interpreter = PDFPageInterpreter(resource_manager,
                                                  converter)

            page_interpreter.process_page(page)
            text = fake_file_handle.getvalue()

            yield text

            # close open handles
            converter.close()
            fake_file_handle.close()


def extract_text(pdf_path):
    text = ""
    for page in extract_text_by_page(pdf_path):
        #print(page)
            text= page+" "+text
        return text
        # Driver code
    
    
if __name__ == '__main__':
    text=extract_text('document.pdf')
    print(text)

需求说明 #

需要提取固定红色标识的字段（如Oneri di registrazione atti giudiziari）及其对应的蓝色数值，示例输出如下：

• 执行代码：

  print(oneri_di_registrazione_atti_giudiziari)
  

  输出字符串："Valore in lite minimo 300 Limite di indennizzo 500"
• 执行代码：

  print(tutela_dati_personali)
  

  输出字符串："Massimale per evento 25000"

红色字段不会随文件变化，但蓝色数值可能改变，希望将数值与对应红色字段关联。

提取到的原始文本 #

Valoreinliteminimoeuro300,00OneridiregistrazionediattigiudiziariLimitediindennizzoeuro500,00PerlagaranziaATTIVITA'AZIENDALECOMPLETAMassimalepereventoeuro50.000,00SpeseperunsecondolegaledomiciliatarioLimitediindennizzoeuro2.000,00ControversiecontrattualiconifornitoriValoreinlitemassimoEuro50.000,00ControversiecontrattualiconifornitoriScoperto20%PerlagaranziaSALUTEESICUREZZASULLAVOROMassimalepereventoeuro25.000,00PerlagaranziaTUTELADEIDATIPERSONALIMassimalepereventoeuro25.000,00

内容的提问来源于stack exchange，提问作者Mario