Update the Tkinter Button Text
-
Use
StringVarto Change the Tkinter Button Text -
Tkinter Button
textProperty to Change the Button Text
In this tutorial, we will introduce how to change the Tkinter button text. It is similar to the methods to change the Tkinter label text,
StringVarMethod- Button
textProperty Method
Use StringVar to Change the Tkinter Button Text
StringVar is one type of Tkinter constructor to create the Tkinter string variable.
After we associate the StringVar variable to the Tkinter Button widget, Tkinter will update the text of this Button when the variable is modified.
import tkinter as tk
class Test:
def __init__(self):
self.root = tk.Tk()
self.root.geometry("250x100")
self.text = tk.StringVar()
self.text.set("Original Text")
self.buttonA = tk.Button(self.root, textvariable=self.text)
self.buttonB = tk.Button(
self.root, text="Click to change text", command=self.changeText
)
self.buttonA.pack(side=tk.LEFT)
self.buttonB.pack(side=tk.RIGHT)
self.root.mainloop()
def changeText(self):
self.text.set("Updated Text")
app = Test()
self.text = tk.StringVar()
self.text.set("Original Text")
The Tkinter constructor couldn’t initiate the string variable with the string like self.text = tk.StringVar("Text").
We should call set method to set the StringVar value, like self.text.set("Original Text").
self.buttonA = tk.Button(self.root, textvariable=self.text)
The StringVar variable self.text is assigned to the option textvariable of self.buttonA. Tkinter will update the text of self.buttonA automatically if self.text is modified.
Tkinter Button text Property to Change the Button Text
Another solution to change the Tkinter button text is to change the text property of the button.
import tkinter as tk
class Test:
def __init__(self):
self.root = tk.Tk()
self.root.geometry("250x100")
self.buttonA = tk.Button(self.root, text="Original Text")
self.buttonB = tk.Button(
self.root, text="Click to change text", command=self.changeText
)
self.buttonA.pack(side=tk.LEFT)
self.buttonB.pack(side=tk.RIGHT)
self.root.mainloop()
def changeText(self):
self.buttonA["text"] = "Updated Text"
app = Test()
text is one key of the Button object whose text could be initiated with text="Original Text" and could also be updated by assigning the new value to text.
tk.Button.configure() method could also change the text property to change the text of Tkinter Button, as shown below.
import tkinter as tk
class Test:
def __init__(self):
self.root = tk.Tk()
self.root.geometry("250x100")
self.buttonA = tk.Button(self.root, text="Original Text")
self.buttonB = tk.Button(
self.root, text="Click to change text", command=self.changeText
)
self.buttonA.pack(side=tk.LEFT)
self.buttonB.pack(side=tk.RIGHT)
self.root.mainloop()
def changeText(self):
self.buttonA.configure(text="Updated Text")
app = Test()
Founder of DelftStack.com. Jinku has worked in the robotics and automotive industries for over 8 years. He sharpened his coding skills when he needed to do the automatic testing, data collection from remote servers and report creation from the endurance test. He is from an electrical/electronics engineering background but has expanded his interest to embedded electronics, embedded programming and front-/back-end programming.
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