code: def getFileDialog(self):
      application_window = tk.Tk()
  
      # Build a list of tuples for each file type the file dialog should display
      my_filetypes = [("csv files", ".csv")]
  
      # Ask the user to select a one or more file names.
      answer = filedialog.askopenfilename(
          parent=application_window,
          initialdir=os.getcwd(),
          title="Please select a file",
          filetypes=my_filetypes,
      )
      application_window.destroy()
      return answer
  
imports: from collections import OrderedDict
  import os
  from genericpath import isdir, isfile
  from os import listdir
  from os.path import join
  from enum import Enum
  from bokeh.models import Div
  from bokeh.plotting import curdoc
  import tkinter
  from tkinter import filedialog
  import colorsys
  from rl_coach.core_types import TimeTypes
label_desc: Use image node_id 1 for calling the DialogApp obj's underlying member method code with example usage: obj.getFileDialog() and returns: answer