class_docstr: Data Processor for Mellon QA dialogues. 
      
class_docstr_tok: ["Data","Processor","for","Mellon","QA","dialogues","."]
docstr: Reads file into a list
docstr_tok: ["Reads","file","into","a","list"]
code: def open_csv(self, filename):
      """
      Reads file into a list
      """
      filename = os.path.join(self.data_dir, filename)
      with open(filename, "r", encoding="UTF-8") as f:
          df = pd.read_csv(filename)
      return df.to_dict(orient="index")
  
file_path: NeMo/nemo/collections/nlp/data/dialogue/data_processor/mellon_qa_data_processor.py
imports: import os
  import pandas
  from nemo.collections.nlp.data.dialogue.data_processor.data_processor import DialogueDataProcessor
  from nemo.collections.nlp.data.dialogue.input_example.input_example import DialogueInputExample
label_desc: Use image node_id 2 for calling the DialogueMellonQADataProcessor obj's underlying member method code with example usage: obj.open_csv(filename) and returns: df