Python 3, Tkinter, How to update button text

Question

Im trying to make it so that when the user clicks a button, it becomes \"X\" or \"0\" (Depending on their team). How can I make it so that the text on the button is updated?

Answer 1

To sum up this thread: button.config and button.configure both work fine!

button.config(text="hello")

or

button.configure(text="hello")

Answer 2

btn is just a dictionary of values, lets see what comes up then:

#lets do another button example
Search_button
<tkinter.Button object .!button>
#hmm, lets do dict(Search_button)
dict(Search_button)
{'activebackground': 'SystemButtonFace', 'activeforeground': 
'SystemButtonText', 'anchor': 'center', 'background': 'SystemButtonFace', 
'bd': <pixel object: '2'>, 'bg': 'SystemButtonFace', 'bitmap': '', 
'borderwidth': <pixel object: '2'>, 'command': '100260920point', 'compound': 
'none', 'cursor': '', 'default': 'disabled', 'disabledforeground': 
'SystemDisabledText', 'fg': 'SystemButtonText', 'font': 'TkDefaultFont', 
'foreground': 'SystemButtonText', 'height': 0, 'highlightbackground': 
'SystemButtonFace', 'highlightcolor': 'SystemWindowFrame', 
'highlightthickness': <pixel object: '1'>, 'image': '', 'justify': 'center', 
'overrelief': '', 'padx': <pixel object: '1'>, 'pady': <pixel object: '1'>, 
'relief': 'raised', 'repeatdelay': 0, 'repeatinterval': 0, 'state': 
'normal', 'takefocus': '', 'text': 'Click me for 10 points!', 
'textvariable': '', 'underline': -1, 'width': 125, 'wraplength': <pixel 
object: '0'>}
#this will not work if you have closed the tkinter window

As you can see, it is a large dictionary of values, so if you want to change any button, simply do:

Button_that_needs_to_be_changed["text"] = "new text here"

Thats it really!

It will automatically change the text on the button, even if you are on IDLE!

Answer 3

I think that code will be useful for you.

import tkinter 
from tkinter import *
#These Necessary Libraries

App = Tk()
App.geometry("256x192")

def Change():
    Btn1.configure(text=Text.get()) # Changes Text As Entry Message.
    Ent1.delete(first=0, last=999) # Not necessary. For clearing Entry.

Btn1 = Button(App, text="Change Text", width=16, command=Change)
Btn1.pack()

Text = tkinter.StringVar() # For Pickup Text

Ent1 = Entry(App, width=32, bd=3, textvariable=Text) #<-
Ent1.pack()

App.mainloop()

Answer 4

Another way is by btn.configure(text="new text"), like this:

import tkinter as tk
root = tk.Tk()

def update_btn_text():
    if(btn["text"]=="a"):
        btn.configure(text="b")
    else:
        btn.configure(text="a")


btn = tk.Button(root, text="a", command=update_btn_text)
btn.pack()

root.mainloop()

Answer 5

The Button widget, just like your Label, also has a textvariable= option. You can use StringVar.set() to update the Button. Minimal example:

import tkinter as tk

root = tk.Tk()

def update_btn_text():
    btn_text.set("b")

btn_text = tk.StringVar()
btn = tk.Button(root, textvariable=btn_text, command=update_btn_text)
btn_text.set("a")

btn.pack()

root.mainloop()

Answer 6

from tkinter import *

BoardValue = ["-","-","-","-","-","-","-","-","-"]

window = Tk()
window.title("Noughts And Crosses")
window.geometry("10x200")

v = StringVar()
Label(window, textvariable=v,pady=10).pack()
v.set("Noughts And Crosses")

btn=[]

class BoardButton():
    def __init__(self,row_frame,b):
        global btn
        self.position= len(btn)
        btn.append(Button(row_frame, text=b, relief=GROOVE, width=2,command=lambda: self.callPlayMove()))
        btn[self.position].pack(side="left")

    def callPlayMove(self):
        PlayMove(self.position)

def DrawBoard():
    for i, b in enumerate(BoardValue):
        global btn
        if i%3 == 0:
            row_frame = Frame(window)
            row_frame.pack(side="top")
        BoardButton(row_frame,b)
        #btn.append(Button(row_frame, text=b, relief=GROOVE, width=2))
        #btn[i].pack(side="left")

def UpdateBoard():
    for i, b in enumerate(BoardValue):
        global btn
        btn[i].config(text=b)

def PlayMove(positionClicked):
    if BoardValue[positionClicked] == '-':
        BoardValue[positionClicked] = "X"
    else:
        BoardValue[positionClicked] = '-'
    UpdateBoard()

DrawBoard()
window.mainloop()