# -*- coding: utf-8 -*-
"""
Created on Wed Sep 18 22:21:24 2020
@author: Jean-Paul
"""
import tkinter

def save():
    File_save = open("Sauvegarde.txt", "w")
    File_save.write("Essai")
    File_save.close()

# Création de la fenêtre principale

window_1 = tkinter.Tk()
window_1.geometry("200x150+20+20")

Bouton_save = tkinter.Button(window_1, text="Save", fg="black", font=("Helvetica", 12))
Bouton_save.place(x=10, y=10)
Bouton_save.bind('<Button-1>', save())

window_1.mainloop()