def i2():
btn2['bg']='yellow'
def i3():
btn3['bg']='yellow'
def i4():
btn4['bg']='yellow'
def i5():
btn5['bg']='yellow'
def i6():
btn6['bg']='yellow'
def i7():
btn7['bg']='yellow'
def i8():
btn8['bg']='yellow'
def i9():
btn9['bg']='yellow'
def i10():
btn10['bg']='yellow'
def i11():
btn11['bg']='yellow'
def i12():
btn12['bg']='yellow'
I've been thinking about this issue for a long time how I can this statement short? plz help me..