read text file

import tkinter as tk
from tkinter import filedialog as fd
import pathlib
def openFile():
    filetypes = (
        ('text files', '*.txt'),
        ('All files', '*.*')
    )
    initDir = pathlib.Path().resolve()
    try:
        filename = fd.askopenfilename(
            title='Επιλογή αρχείου',
            initialdir=initDir,
            filetypes=filetypes
        )
        f = open(filename, 'r')
        content_list =  f.readlines()
        f.close()

        contnet = ''
        for c in content_list:
            contnet += c
        text_area.delete(1.0,"end")
        text_area.insert(1.0, contnet)
    except Exception as ex:
        print(ex)


root = tk.Tk()
root.title('Κείμενα')
root.geometry('500x300')


info_label = tk.Label(text='Αναγνωση / Αποθήκευση αρχείου κειμένου')
info_label.pack()
text_area = tk.Text()
text_area.pack()
openButton = tk.Button(root,text='Άνοιγμα', command=openFile)
openButton.pack()


root.mainloop()