code: def browseFile(self):
      filetypes = [
          ("HTML Files", "*.htm *.html", "TEXT"),
          ("PDF Files", "*.pdf", "TEXT"),
          ("Windows Help Files", "*.chm"),
          ("Text Files", "*.txt", "TEXT"),
          ("All Files", "*"),
      ]
      path = self.path.get()
      if path:
          dir, base = os.path.split(path)
      else:
          base = None
          if sys.platform[:3] == "win":
              dir = os.path.join(os.path.dirname(sys.executable), "Doc")
              if not os.path.isdir(dir):
                  dir = os.getcwd()
          else:
              dir = os.getcwd()
      opendialog = tkFileDialog.Open(parent=self, filetypes=filetypes)
      file = opendialog.show(initialdir=dir, initialfile=base)
      if file:
          self.path.set(file)
  
file_path: catboost/contrib/tools/python/src/Lib/idlelib/configHelpSourceEdit.py
imports: import os
  import sys
  from Tkinter import *
  import tkMessageBox
  import tkFileDialog
label_desc: Use image node_id 3 for calling the GetHelpSourceDialog obj's underlying member method code with example usage: obj.browseFile() without return types