from tkinter import *
buttons = []
def remove():
for btn in buttons:
btn.destroy()
def main():
root = Tk()
rem_btn = Button(command=remove, text="Remove all")
rem_btn.grid(row=8, column=0, columnspan=8, sticky="ew")
for pos in range(0, 64):
btn = Button(command=lambda pos=pos: print(pos), width=5, height=2, relief=RIDGE, text=pos)
btn.grid(row=pos // 8, column=pos % 8)
buttons.append(btn)
root.mainloop()
main()