code: def get(self, s):
          
          ret = []
          search_by_expression = self._valid_search(s)
          for l in self.lines:
              if search_by_expression(l):
                  ret.append(self._parse_line(l))
          return ret
docs: Returns all lines that contain `s` anywhere and wrap them in a list of
          dictionaries.  `s` can be either a single string or a string list. For
          list, all keywords in the list must be found in each line.
  
          Parameters:
              s(str or list): one or more strings to search for.
  
          Returns:
              (list): list of dictionaries corresponding to the parsed lines
              contain the `s`.