code: def __init__(self, parser, args):
      self.parser, self.args = parser, args
      self.args.threshold *= 1e-3
      self.segments = []
  
      if self.args.input_type == "hts":
          self.file_scp = open(
              os.path.join(self.args.scp, "wav.scp"),
              "r",
              encoding="utf-8",
          )
          self.label_file = open(
              os.path.join(self.args.scp, "label"),
              "r",
              encoding="utf-8",
          )
  
      elif self.args.input_type == "xml":
          self.file_scp = open(
              os.path.join(self.args.scp, "score.scp"),
              "r",
              encoding="utf-8",
          )
          self.xml_reader = XMLReader(
              os.path.join(self.args.scp, "score.scp")
          )
  
      self.update_segments = None
      self.update_text = open(
          os.path.join(self.args.scp, "text.tmp"), "w", encoding="utf-8"
      )
      self.update_label = open(
          os.path.join(self.args.scp, "label.tmp"),
          "w",
          encoding="utf-8",
      )
      self.writer = SingingScoreWriter(
          self.args.score_dump,
          os.path.join(self.args.scp, "score.scp.tmp"),
      )
  
imports: import argparse
  import math
  import os
  import sys
  import music21
  from espnet2.fileio.score_scp import SingingScoreWriter, XMLReader
label_desc: Use image node_id 1 to create a new DataHandler object  with example: obj = DataHandler(parser, args)