code: def _parse_all_radfuncs(self, func_name):
          
          for node in self.root.findall(func_name):
              grid = node.attrib["grid"]
              values = np.array([float(s) for s in node.text.split()])
  
              yield self.rad_grids[grid], values, node.attrib
docs: Parse all the nodes with tag func_name in the XML file.