How to connect a variable to the Tkinter Entry widget?

TkinterPythonGUI-Programming

Tkinter Entry widget is an Input widget that supports and accepts single-line user input. It accepts all types of characters in UTF-8 module. In order to get the input from the Entry widget, we have to define a variable (based on Data Types it accepts) that accepts only string characters. Then, by using get() method, we can print the given input from the Entry widget.

Example

# Import the Tkinter Library
from tkinter import *

# Create an instance of Tkinter Frame
win = Tk()

# Set the geometry of window
win.geometry("700x250")

# Define a String Variable
var = StringVar()

# Define a function to print the Entry widget Input
def printinput(*args):
   print(var.get())

# Create an Entry widget
entry = Entry(win, width=35, textvariable=var)
entry.pack()

# Trace the Input from Entry widget
var.trace("w", printinput)
win.mainloop()

Output

Running the above code will display a window with an Entry widget.

When we write something in the Entry widget, it will just print out all the characters from the Entry widget on the console.

H
He
Hel
Hell
Hello
Hello
Hello W
Hello Wo
Hello Wor
Hello Worl
Hello World
Hello World!
raja
Published on 26-May-2021 11:55:35
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