如何解决 AttributeError: module 'pdfminer' has no attribute 'extract_tables'

这个错误通常是因为您正在使用旧版本的pdfminer库。在旧版本中，`extract_tables`函数不存在。您可以通过以下方法解决：

1. 升级pdfminer库到最新版本：

   pip install --upgrade pdfminer

2. 如果升级不起作用，可以尝试使用pdfminer.six库：

   pip install pdfminer.six

然后在代码中使用以下语句进行表格提取：

   from pdfminer.pdfparser import PDFParser
   from pdfminer.pdfdocument import PDFDocument
   from pdfminer.pdfinterp import PDFResourceManager, PDFPageInterpreter
   from pdfminer.converter import PDFPageAggregator
   from pdfminer.layout import LAParams, LTTextBox, LTTextLine, LTChar, LTFigure, LTImage, LTTextBoxHorizontal, LTTextGroup, LTTextBoxVertical
   from pdfminer.pdfpage import PDFPage
   from pdfminer.pdfpage import PDFTextExtractionNotAllowed
   from pdfminer.pdfdevice import PDFDevice
   from pdfminer.layout import *
   from pdfminer.pdfinterp import resolve1
   from pdfminer.converter import PDFPageAggregator

   def extract_tables(pdf_path):
       tables = []
       with open(pdf_path, "rb") as fp:
           parser = PDFParser(fp)
           doc = PDFDocument(parser)
           if not doc.is_extractable:
               raise PDFTextExtractionNotAllowed
           rsrcmgr = PDFResourceManager()
           laparams = LAParams()
           device = PDFPageAggregator(rsrcmgr, laparams=laparams)
           interpreter = PDFPageInterpreter(rsrcmgr, device)
           for page in PDFPage.create_pages(doc):
               interpreter.process_page(page)
               layout = device.get_result()
               for lt_obj in layout:
                   if isinstance(lt_obj, LTTable):
                       table = []
                       for row in lt_obj:
                           row_data = []
                           for cell in row:
                               row_data.append(cell.get_text().strip())
                           table.append(row_data)
                       tables.append(table)
       return tables