Python的turtle如何才能设置背景与画笔不能同色？

Question

我就是改变颜色之后颜色相同但是表达效果不同。无法判等。怎样去进行这种判等操作？（超急，30号就要提交作品了）

相关程序代码：

def ChooseBackColor():
    global temp,wi
    r = tkinter.colorchooser.askcolor(title='画布颜色选取器')
    for x in r:
        s = r[1]
    turtle.colormode(1.0)
    print("Screen:",s,"Pen:",pen.pencolor())
    if(pen.pencolor()==s):
        messagebox.showerror("错误 - 画布","不能使用与画笔相同的颜色。")
    else:
        m.bgcolor(s)
        temp=pen.pencolor()
        wi=pen.width()

def ChooseBackColor():
    global temp,wi
    r = tkinter.colorchooser.askcolor(title='画布颜色选取器')
    for x in r:
        s = r[1]
    turtle.colormode(1.0)
    print("Screen:",s,"Pen:",pen.pencolor())
    if(pen.pencolor()==s):
        messagebox.showerror("错误 - 画布","不能使用与画笔相同的颜色。")
    else:
        m.bgcolor(s)
        temp=pen.pencolor()
        wi=pen.width()

Answer 1

https://docs.python.org/zh-cn/3/library/turtle.html#turtle.bgcolor
https://docs.python.org/zh-cn/3/library/turtle.html#turtle.pencolor