我对Python编程非常陌生，我有一个关于python的问题: add_r()函数在paragraph.py中的定义在哪里？

Question

• add_r在文件paragraph.py

中被称为inside add_run

   def add_run(self, text=None, style=None):
        r = self._p.**add_r()**
        run = Run(r, self)
        if text:
            run.text = text
        if style:
            run.style = style
        return run

Answer 1

为了响应类定义中的声明，它通过其元类将其添加到docx.oxml.text.paragraph.CT_P类：

class CT_P(BaseOxmlElement):
    """
    ``<w:p>`` element, containing the properties and text for a paragraph.
    """
    pPr = ZeroOrOne('w:pPr')
    r = ZeroOrMore('w:r')  # <--- this line causes the metaclass to create the .add_r() method

https://github.com/python-openxml/python-docx/blob/master/docx/oxml/text/paragraph.py#L16