from tkinter import *

from tkinter import filedialog
  
def browseFiles():
    filename = filedialog.askopenfilename(initialdir = "~",
                                          title      = "Select a File",
                                          filetypes  = (("Text files",  "*.txt"),
                                                        ("any file",    "*.*")))
      
    label_file_explorer.configure(text="File Opened: " + filename)

window = Tk()
window.title('File Explorer')
window.geometry("500x500")
window.config(background = "white")

label_file_explorer = Label(window,
                            text   = "File Explorer using Tkinter",
                            width  = 100,
                            height = 4,
                            fg     = "blue")
      
button_explore      = Button(window,
                           text    = "Browse Files",
                           command = browseFiles)
  
button_exit         = Button(window,
                           text    = "Exit",
                           command = exit)
  
label_file_explorer.grid(column = 1, row = 1)
button_explore.grid(     column = 1, row = 2)
button_exit.grid(        column = 1, row = 3)
  
window.mainloop()