code: def text(self):
          
          parts = [("%s" if isinstance(p, Insert) else p) for p in self.parts]
          parts = [("%%" if p == "%" else p) for p in parts] # escape percent
          return "".join(parts)
docs: The text displayed on the block.
  
          String containing ``"%s"`` in place of inserts.
  
          eg. ``'say %s for %s secs'``