How to update tkinter button text in python

[HelpMeProgram!]

I need help with my coding and I need to know how to configure my text for my button, Here is my code so far:

class EyeSprite(Sprite):    
    def __init__(self, game):
        Sprite.__init__(self, game)
        self.images = [
            PhotoImage(file="C:\\Users\\John Magana\\Desktop\\Python 
Projects\\clicker game folder\\eye1.png")
        ]
        self.current_image = 0
        self.current_image_add = 1
        self.last_time = time.time()
        self.this_time = time.time()
        self.clickedcount = 0
        self.autoclickers = 0
        self.cost = 10
        self.text = g.canvas.create_text(60, 10, anchor='w', fill='black', font='Arial 20', text='You have: %s click points'% self.clickedcount)
        self.textauto = g.canvas.create_text(60, 260, anchor='w', fill='black', font='Arial 20', text='You have: %s autoclickers'% self.autoclickers)
        self.image = game.canvas.create_image(145, 10, image = self.images[0], anchor='nw')
        game.canvas.bind_all('<Button-1>', self.clicked)
        global autoclickerbuy
        autoclickerbuy = False
        starttime = time.time()
        self.buttontext = ('Autoclicker: %s points: 20Clicks' % self.cost)
        pointbutton1 = Button(text=self.buttontext, fg='black', command=self.autoclicker)
        pointbutton1.pack(anchor='w')

how do I configure the button text so when it is clicked it will update to a new variable?