def check_random_state(seed):
 if ((seed is None) or (seed is np.random)):
  return np.random.mtrand._rand
 if isinstance(seed, (int, np.integer)):
  return np.random.RandomState(seed)
 if isinstance(seed, np.random.RandomState):
  return seed
 raise ValueError(('%r cannot be used to seed a numpy.random.RandomState instance' % seed))

def check_random_state ( seed ) : if ( ( seed is None ) or ( seed is np . random ) ) : return np . random . mtrand . _rand if isinstance ( seed , ( int , np . integer ) ) : return np . random . RandomState ( seed ) if isinstance ( seed , np . random . RandomState ) : return seed raise ValueError ( ( '%r cannot be used to seed a numpy.random.RandomState instance' % seed ) )
turn seed into a np .