code: def count_elements(fname, element):
      
      num = 0
      tot = 0
      for event, elem in iterparse(fname):
          tot += 1
          if elem.text != '':
              #print(' tag  = ', elem.tag)
              #print(' event  = ', event   # always end
              #print(' text = ',  elem.text)
              pass
          if element in elem.tag:
              #print(elem.xpath( 'description/text( )' ))
              #print(elem.text)
              num += 1
              elem.clear()
      return num, tot
docs: returns (511, 35082) for ANC__WhereToHongKong.xml