import tkinter
from tkinter.filedialog import asksaveasfile, askopenfile
from tkinter.messagebox import showerror
import easygui
FILE_NAME = tkinter.NONE
def credit():
    easygui.msgbox(
        " You can save files with buttons Save and Save As \n You can open files with button Open \n You can create new file with button New File")
def new_file():
    global FILE_NAME
    FILE_NAME = "Untitled"
    text.delete('1.0', tkinter.END)
def save_file():
    data = text.get('1.0', tkinter.END)
    out = open(FILE_NAME, 'w')
    out.write(data)
    out.close()
def save_as():
    out = asksaveasfile(mode='w', defaultextension='.txt')
    data = text.get('1.0', tkinter.END)
    try:
        out.write(data.rstrip())
    except Exception:
        showerror(title="Oops!", message="Unable to save file....")
def open_file():
    global FILE_NAME
    inp = askopenfile(mode="r")
    if inp is None:
        return
    FILE_NAME = inp.name
    data = inp.read()
    text.delete('1.0', tkinter.END)
    text.insert('1.0', data)
root = tkinter.Tk()
root.title("2Text")
root.geometry("600x400")
root.minsize(width=600, height=400)
menuBar = tkinter.Menu(root)
fileMenu = tkinter.Menu(menuBar)
menuBar.add_command(label="New", command=new_file)
menuBar.add_command(label="Open", command=open_file)
menuBar.add_command(label="Save", command=save_file)
menuBar.add_command(label="Save As", command=save_as)
menuBar.add_command(label="Exit", command=root.quit)
menuBar.add_command(label="Credits & Info", command=credit)
root.config(menu=menuBar)
text = tkinter.Text(root, width=400, height=400)
text.pack()
root.mainloop()

 import tkinter
from threading import Thread
from time import sleep
class MyWindow(tkinter.Tk):
    def __init__(self):
        super().__init__()
        self._create_widgets()
        Thread(target=self._update).start()
    def _create_widgets(self):
        self.entry_text = tkinter.Text()
        self.entry_text.pack()
        self.label_pos_cursor = tkinter.Label(text='0')
        self.label_pos_cursor.pack(side=tkinter.BOTTOM, anchor='w')
    def _update(self):
        while True:
            text = self.entry_text.get('1.0', tkinter.END)
            allusion = text.count('\n')
            self.label_pos_cursor.config(text=allusion)
            sleep(0.1)
if __name__ == '__main__':
    root = MyWindow()
    root.mainloop()