code: def substitute(self, *args):
      for color in colors:
          self.txt.tag_remove(color, "1.0", "end")
          self.txt.tag_remove("emph" + color, "1.0", "end")
      self.rex = re.compile(
          ""
      )  # default value in case of malformed regexp
      self.rex = re.compile(
          self.fld.get("1.0", "end")[:-1], re.MULTILINE
      )
      try:
          re.compile("(?P<emph>%s)" % self.fld.get(SEL_FIRST, SEL_LAST))
          self.rexSel = re.compile(
              "%s(?P<emph>%s)%s"
              % (
                  self.fld.get("1.0", SEL_FIRST),
                  self.fld.get(SEL_FIRST, SEL_LAST),
                  self.fld.get(SEL_LAST, "end")[:-1],
              ),
              re.MULTILINE,
          )
      except:
          self.rexSel = self.rex
      self.rexSel.sub(self.addTags, self.txt.get("1.0", "end"))
  
file_path: nltk/nltk/app/nemo_app.py
imports: import itertools
  import re
  from tkinter import SEL_FIRST, SEL_LAST, Frame, Label, PhotoImage, Scrollbar, Text, Tk
label_desc: Use image node_id 2 for calling the FindZone obj's underlying member method code with example usage: obj.substitute() without return types