# make a toggle button with Tkinter
 
from Tkinter import *
 
toggleFlag = True
 
def entryColor():
    """toggle the entry color between white and red"""
    global toggleFlag
    if toggleFlag:
        e1.config(bg='red')
        toggleFlag = False
    else:
        e1.config(bg='white')
        toggleFlag = True
 
# create the root window
root = Tk()
# create a button, command runs the given function when button is clicked
b1 = Button(root, text="Toggle Color", command=entryColor)
# pack button into root window
b1.pack(fill=BOTH, expand=1)
# create an entry box to color
e1 = Entry(root)
e1.pack(fill=BOTH, expand=1)
 
# this allows the program to be an importable module and a runnable program 
if __name__ == "__main__":
    # start the event loop
    root.mainloop()