change value of a variable without a function using a tkinter button

问题

I am new to programming and I want to know If there is any way to change the value of a variable with a Tkinter button out calling a function. As I have to give a function as command to change the value of any variable.

Like this:

import tkinter as tk

a = 1


def test():
    global a
    a = 2
    return


root = tk.Tk()

b = tk.Button(root, text="Click", command=test)
b.pack()

root.mainloop()

But I want to know if there is a way to do it directly without using any function.

Something that might look like this:

command = (a = 2)

回答1:

You have to use a function, otherwise it won't work.

来源：https://stackoverflow.com/questions/59593277/change-value-of-a-variable-without-a-function-using-a-tkinter-button