code: def skip(self, col):
      is_obj = np.issubdtype(self._dataset[col], np.dtype("O"))
      if is_obj:
          logger.info(f"{col} is not numeric and is skipped")
      return is_obj
  
imports: import pandas
  import numpy
  from qlib.contrib.report.data.base import FeaAnalyser
  from qlib.contrib.report.utils import sub_fig_generator
  from qlib.utils.paral import datetime_groupby_apply
  from qlib.contrib.eva.alpha import pred_autocorr_all
  from loguru import logger
  import seaborn
label_desc: Use image node_id 1 for calling the NumFeaAnalyser obj's underlying member method code with example usage: obj.skip(col) and returns: is_obj