code: def get_config_from_sec(self, sec, item, default=None):
      if sec.upper() not in self.cfg:
          return default
      return self.cfg[sec.upper()].get(item, default)
  
imports: import os
  import logging
  import paddle.fluid
label_desc: Use image node_id 15 for calling the ModelBase obj's underlying member method code with example usage: obj.get_config_from_sec(sec, item, default) and returns: self, default