code: def Document(docx=None):
      
      docx = _default_docx_path() if docx is None else docx
      document_part = Package.open(docx).main_document_part
      if document_part.content_type != CT.WML_DOCUMENT_MAIN:
          tmpl = "file '%s' is not a Word file, content type is '%s'"
          raise ValueError(tmpl % (docx, document_part.content_type))
      return document_part.document
docs: Return a |Document| object loaded from *docx*, where *docx* can be
      either a path to a ``.docx`` file (a string) or a file-like object. If
      *docx* is missing or ``None``, the built-in default document "template"
      is loaded.