def _GetItemTimestampFields(datatype):
  return [
    (_MakeField("ctime", "CTime", QFT_TIMESTAMP, "Creation timestamp"),
     datatype, 0, _GetItemTimestamp(operator.attrgetter("ctime"))),
    (_MakeField("mtime", "MTime", QFT_TIMESTAMP, "Modification timestamp"),
     datatype, 0, _GetItemTimestamp(operator.attrgetter("mtime"))),
    ]
some basic plots
dataset/ETHPy150Open ganeti/ganeti/lib/query.py/_GetItemTimestampFields--crossover with--dataset/ETHPy150Open statsmodels/statsmodels/statsmodels/sandbox/regression/kernridgeregress_class.py/GaussProcess.plot