def is_builtin_name(name):
 if (name.startswith(u'__') and name.endswith(u'__')):
  return (ALL_LOWER_CASE_RE.match(name[2:(-2)]) is not None)
 return False

def is_builtin_name ( name ) : if ( name . startswith ( u'__' ) and name . endswith ( u'__' ) ) : return ( ALL_LOWER_CASE_RE . match ( name [ 2 : ( - 2 ) ] ) is not None ) return False
for example .