class_docstr: ReDial Teacher.
class_docstr_tok: ["ReDial","Teacher","."]
code: def get_data_from_file(self, filepath):
      data = []
      with PathManager.open(filepath) as f:
          for line in f:
              data.append(json.loads(line))
      return data
  
imports: from parlai.core.teachers import FixedDialogTeacher
  from parlai.utils.io import PathManager
  from .build import build
  import os
  import json
  import re
  import csv
label_desc: Use image node_id 4 for calling the ReDialTeacher obj's underlying member method code with example usage: obj.get_data_from_file(filepath) and returns: data