使用Python将Word中LaTeX公式复制到PowerPoint的问题

问题现象 #

用Python尝试将Word文档中的公式导入PowerPoint时，幻灯片显示的公式与原公式完全不符：

• 原公式：
• 错误输出公式：

同时将同一公式输出到新Word文档时，结果同样错误。

疑问点 #

• 猜测问题源于公式读取方式，是否有其他可行解决方法？
• 如果Python现有方案不可行，有没有其他可实现该功能的库或语言？
• 能否通过python-pptx给包含公式的文本框添加动画？或者有其他工具可以实现？

现有代码 #

导入PowerPoint的代码 #

import re

import latex2mathml.converter
from pptx import Presentation
from docx import Document
from docx.shared import Inches
import docxlatex as latex
from lxml import etree


def latex_to_word(latex_input):
    mathml = latex2mathml.converter.convert(latex_input, display="block")

    tree = etree.fromstring(mathml)
    xslt = etree.parse(
        'MML2OMML.XSL'
    )
    transform = etree.XSLT(xslt)
    new_dom = transform(tree)

    wrapper = etree.fromstring(
        '''<a14:m xmlns:a14="http://schemas.microsoft.com/office/drawing/2010/main">
            <m:oMath xmlns:m="http://schemas.openxmlformats.org/officeDocument/2006/math">
            </m:oMath>
        </a14:m>''')
    wrapper.getchildren()[0].append(new_dom.getroot())
    return wrapper


def getLatexEquations(text):
    return re.findall(r'\$([^$].*?)\$', text)

latexDoc = latex.Document('demo.docx')
prs = Presentation()

title_slide_layout = prs.slide_layouts[6] # blank slide
slide = prs.slides.add_slide(title_slide_layout)
left = width = height = Inches(1)

equations = getLatexEquations(latexDoc.get_text())

for equation in equations:
    txBoxNum = equations.index(equation) + 1.5
    txBox = slide.shapes.add_textbox(left, Inches(1 * txBoxNum), width, height)
    tf = txBox.text_frame
    txBoxP = tf.add_paragraph()
    txBoxP._element.append(latex_to_word(equation, for_ppt=True))
    tf

prs.save('test.pptx')

输出到Word的测试代码 #

import latex2mathml.converter
from docx import Document
import docxlatex as latex
from lxml import etree

def latex_to_word(latex_input):
    mathml = latex2mathml.converter.convert(latex_input)

    tree = etree.fromstring(mathml)
    xslt = etree.parse(
        'MML2OMML.XSL'
    )
    transform = etree.XSLT(xslt)
    new_dom = transform(tree)

    return new_dom.getroot()

document = Document()
latexDoc = latex.Document('demo.docx').get_text()


p = document.add_paragraph()
p._element.append(latex_to_word(latexDoc))

document.save('test2.docx')

内容的提问来源于stack exchange，提问作者Arya Kurdo