code: def __init__(self):
      self._id = None
      self._nrows = -1
      self._ncols = -1
      self._types = None  # col types
      self._names = None  # col names
      self._data = None  # ordered dict of cached rows, or a scalar
      self._l = 0
  
imports: from h2o.utils.compatibility import *
  from collections import OrderedDict
  import copy
  import gc
  import inspect
  import math
  import time
  import numbers
  import tabulate
  import h2o
  from h2o.backend.connection import H2OConnectionError
  from h2o.utils.shared_utils import _is_fr, _py_tmp_key
  from h2o.model.model_base import ModelBase
  from h2o.expr_optimizer import optimize
label_desc: Use image node_id 1 to create a new H2OCache object from inherited base classes: object with example: obj = H2OCache()