from tkinter import *
from tkinter import ttk
def show_btn(pathname, value):
print (pathname)
print (value)
pathname.insert(END, value)
def main_gui():
win = Tk()
en_1=ttk.Entry(win)
en_1.pack()
for i in range(1,11):
btn_i=ttk.Button(win, text=i, command=lambda:show_btn(en_1, i))
btn_i.pack()
win.mainloop()
main_gui()