code: def verify_all(df, check, *args, **kwargs):
      
      result = check(df, *args, **kwargs)
      try:
          assert np.all(result)
      except AssertionError as e:
          msg = "{} not true for all".format(check.__name__)
          e.args = (msg, df[~result])
          raise
      return df
docs: Verify that all the entries in ``check(df, *args, **kwargs)``
      are true.