code: def load_styles(path_or_doc):
      
      if isinstance(path_or_doc, string_types):
          doc = load(path_or_doc)
      else:
          # Recover the OpenDocumentText instance.
          if isinstance(path_or_doc, ODFDocument):
              doc = path_or_doc._doc
          else:
              doc = path_or_doc
          assert isinstance(doc, OpenDocument), doc
      styles = {_style_name(style): style for style in doc.styles.childNodes}
      return styles
docs: Return a dictionary of all styles contained in an ODF document.