code: def css_text(self, path, default=NULL, smart=False, normalize_space=True):
          
  
          try:
              return get_node_text(self.css_one(path), smart=smart,
                                   normalize_space=normalize_space)
          except IndexError:
              if default is NULL:
                  raise
              else:
                  return default
docs: Get normalized text of node which matches the css path.