code: def get_from_describe(self, data, metric):
      if self._describe is None:
          self._describe = data.describe(
              ddof=self.ddof, unbiased=~self.bias
          )
      return self._describe[metric]
  
imports: import logging
  import re
  from typing import List
  import pandas
  from fate.arch import Context
  from ..abc.module import Module
label_desc: Use image node_id 2 for calling the StatisticsSummary obj's underlying member method code with example usage: obj.get_from_describe(data, metric) and returns: self