def get_text_summary(self, **kwargs):
    ''' Returns string with human-readable description of this dataset 
        e.g. source, author/creator, etc.
    '''
    if hasattr(self, 'summary'):
      return self.summary
    s = (self.__class__.__name__, self.nObs) % '%s. nObs %d'
    return s
dataset/ETHPy150Open daeilkim/refinery/refinery/bnpy/bnpy-dev/bnpy/data/DataObj.py/DataObj.get_text_summary/swapped operands of `%`