def _aybabtu(c):
 l = [c, Versioned]
 for b in inspect.getmro(c):
  if ((b not in l) and issubclass(b, Versioned)):
   l.append(b)
 return l[2:]

def _aybabtu ( c ) : l = [ c , Versioned ] for b in inspect . getmro ( c ) : if ( ( b not in l ) and issubclass ( b , Versioned ) ) : l . append ( b ) return l [ 2 : ]
get all of the parent classes of c{c} .