Starting from the minimal code given at https://python-docx.readthedocs.io/en/stable/api/enum/WdBuiltinStyle.html

from docx import Document
from docx.enum.style import WD_STYLE

document = Document()
styles = document.styles
style = styles[WD_STYLE.BODY_TEXT]

gives the following error:

KeyError: "no style with name 'BODY_TEXT (-67)'"

I'm sure I'm doing something wrong, but if you know of a way I can fix this, I'd be very grateful. Thank you for your time!