'_Paragraph' object has no attribute 'bullet'

[Xwxhwy]

class Paragraph in presentation could'n been used, there has a wrong:'_Paragraph' object has no attribute 'bullet'.

my run_demo is:
`from utils import *
from pptx import Presentation
from pptx.text.text import Font
from presentation import Paragraph,StyleArg
prs = Presentation("/Users/meiguihua/Documents/组会汇报/try1.pptx")

2. 获取第一页幻灯片的第一个文本框

slide = prs.slides[0]
textbox = next(shape for shape in slide.shapes if shape.has_text_frame)

3. 处理第一个段落

paragraph = textbox.text_frame.paragraphs[0]
para_obj = Paragraph(paragraph=paragraph, idx=0) # idx为段落序号
style_args = StyleArg(
paragraph_id=True, # 是否显示段落ID
element_id=True, # 是否显示元素ID
font_style=True, # 是否保留字体样式
)
html_output = para_obj.to_html(style_args)
print("生成的HTML:\n", html_output)`