Prerequisite:Tkinter

Python offers multiple options for developing a GUI (Graphical User Interface). Out of all the GUI methods, Tkinter is the most commonly used method. It is a standard Python interface to the Tk GUI toolkit shipped with Python. Python with Tkinter is the fastest and easiest way to create GUI applications.

In this article, we will learn how to make an on/off switch using Tkinter.

Approach:

• Make a global variable named asis_on; the default value is True, which indicates the switch is ON.
• Make twoImageObjects; one object has"on image" and another one has"off image".
• Create a button that has"on image" as default; set the border width to be zero.
• Make a function that will change the button image, using theconfig() method.
• The function will check, whether theis_on value isTrueorFalse

Image link:

• Switch On
• Switch Off

Below is the Implementation:

# Import Modulefromtkinterimport*# Create Objectroot=Tk()# Add Titleroot.title('On/Off Switch!')# Add Geometryroot.geometry("500x300")# Keep track of the button state on/off#global is_onis_on=True# Create Labelmy_label=Label(root,text="The Switch Is On!",fg="green",font=("Helvetica",32))my_label.pack(pady=20)# Define our switch functiondefswitch():globalis_on# Determine is on or offifis_on:on_button.config(image=off)my_label.config(text="The Switch is Off",fg="grey")is_on=Falseelse:on_button.config(image=on)my_label.config(text="The Switch is On",fg="green")is_on=True# Define Our Imageson=PhotoImage(file="on.png")off=PhotoImage(file="off.png")# Create A Buttonon_button=Button(root,image=on,bd=0,command=switch)on_button.pack(pady=50)# Execute Tkinterroot.mainloop()

Output:

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