def parse_head(fileobj, parser):
 while 1:
  data = fileobj.read(CHUNK)
  try:
   parser.feed(data)
  except EndOfHeadError:
   break
  if (len(data) != CHUNK):
   break
 return parser.http_equiv

def parse_head ( fileobj , parser ) : while 1 : data = fileobj . read ( CHUNK ) try : parser . feed ( data ) except EndOfHeadError : break if ( len ( data ) != CHUNK ) : break return parser . http_equiv
return a list of key .