from tkinter import *
from tkinter import scrolledtext
from tkinter import filedialog
#from os import path


window = Tk()

window.title("Welcome to Tkinter!")
window.geometry('400x300+30+200')

txt = scrolledtext.ScrolledText(window,width=40,height=10)
txt.insert(INSERT,'Overwrite this text')
txt.grid(column=0,row=0)
txt.pack()

fileName = filedialog.askopenfilename()
print(fileName)



file = open( fileName, "r" )
txt.delete("1.0","end")

text = file.read().splitlines()
for line in text:
    txt.insert(INSERT,line + "\n")
file.close()



window.mainloop()