Set Text of Tkinter Text Widget With a Button

Jinku Hu Dec 10, 2020 Feb 22, 2020 Tkinter Tkinter Text
Set Text of Tkinter Text Widget With a Button

Tkinter Text widget doesn’t have a dedicated set method to set the content of the Text. It needs to first delete the existing content and then insert the new content if we have to change the content completely.

This article will introduce how to set the Tkinter widget usinga Tkinter button.

Complete Working Codes to Set Text in Text With delete and insert Methods

import tkinter as tk
root = tk.Tk()
root.geometry("400x240")

def setTextInput(text):
    textExample.delete(1.0,"end")
    textExample.insert(1.0, text)

textExample = tk.Text(root, height=10)
textExample.pack()

btnSet = tk.Button(root, 
                   height=1, 
                   width=10, 
                   text="Set", 
                   command=lambda:setTextInput("new content"))
btnSet.pack()

root.mainloop()

Tkinter Set Content of Tkinter Text_delete and insert method

textExample.delete(1.0,"end")

delete method of Text deletes the specified range of characters in the Text box, as introduced in the article of how to clear Tkinter Text box.

1.0 is the first character and "end" is the last character of the content in the Text widget. Therefore, it deletes all the content inside the Text box.

textExample.insert(1.0, text)

insert method inserts the text at the specified position. In the above code, it inserts the text at the beginning.

Author: Jinku Hu
Jinku Hu avatar Jinku Hu avatar

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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