如何使用tkinter更改按钮颜色

Question

我不断收到以下错误：AttributeError：’NoneType’对象没有属性’configure’

# create color button
self.button = Button(self,
                     text = "Click Me",
                     command = self.color_change,
                     bg = "blue"
                    ).grid(row = 2, column = 2, sticky = W)

def color_change(self):
    """Changes the button's color"""

    self.button.configure(bg = "red")

Answer 1

执行时self.button = Button(...).grid(...)，分配给self.button该grid()命令的结果是命令的结果，
而不是 对Button创建的对象的引用。

您需要self.button在打包/网格化之前分配变量。它看起来应该像这样：

self.button = Button(self,text="Click Me",command=self.color_change,bg="blue")
self.button.grid(row = 2, column = 2, sticky = W)