Python code to remove the end of document is not working

I am using python-docx to clean up multiple Word documents.

The following code is supposed to find paragraphs which contain only one word and the word is among the list provided, case-insensitive, and then remove the remaining text from the document. However, it is not working. I can't figure out the reason!

import os
import re
from docx import Document

def remove_end(document):
    for paragraph in document.paragraphs:
        text = paragraph.text.strip().lower()
        words_to_check = ['references', 'acknowledgements', 'note', 'notes']
        if text in words_to_check and len(paragraph.text.split()) <= 2:
            if paragraph not in document.paragraphs:
                continue
            idx = document.paragraphs.index(paragraph)
            del document.paragraphs[idx+1:]
            break
    document.save(file_path)

The method for removing paragraphs (del document.paragraphs[idx+1:]) is not correct. As explained in https://github.com/python-openxml/python-docx/issues/33 removal of paragraphs is not officially implemented/supported in python-docx. The Github issue mentions a workaround with the warning that this may not work if there are linked items like a picture, hyperlink or chart in the paragraph that you want to delete. However, I tested the workaround on a document with a hyperlink in a deleted paragraph (as that seems the most likely item in a Reference list for example) and that worked fine.

MCVE:

from docx import Document

words_to_check = ['references', 'acknowledgements', 'note', 'notes']

# delete_paragraph from https://github.com/python-openxml/python-docx/issues/33
def delete_paragraph(paragraph):
    p = paragraph._element
    p.getparent().remove(p)
    paragraph._p = paragraph._element = None

def remove_end(document):
   del_par = False
   for paragraph in document.paragraphs:
      if not del_par:
         text = paragraph.text.strip().lower()
         if text in words_to_check:
            delete_paragraph(paragraph)
            del_par = True      
      else:
         delete_paragraph(paragraph)
         
   document.save('newdoc.docx')

document = Document('mydoc.docx')
remove_end(document)

This keeps the loop active when a keyword is found, but instead of checking the text it will start deleting the remaining paragraphs.