class_docstr: This model will load a score file, and return score at date exists in score file.
code: def get_data_with_date(self, date, **kwargs):
      score = self.pred.loc(axis=0)[
          :, date
      ]  # (stock_id, trade_date) multi_index, score in pdate
      score_series = score.reset_index(level="datetime", drop=True)[
          "score"
      ]  # pd.Series ; index:stock_id, data: score
      return score_series
  
file_path: qlib/qlib/contrib/online/online_model.py
imports: import random
  import pandas
  from ...data import D
  from ..model.base import Model
label_desc: Use image node_id 2 for calling the ScoreFileModel obj's underlying member method code with example usage: obj.get_data_with_date(date) and returns: score_series