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adding options

This is a version of the program that uses radio buttons.
You are going to update this program so that it uses an option menu. But the options need to be read
from a text file.

from tkinter import *

def save_data():
fileD = open("deliveries.txt", "a")
fileD.write("Depot:\n")
fileD.write("%s\n" % depot.get())
fileD.write("Description:\n")
fileD.write("%s\n" % description.get())
fileD.write("Address:\n")
fileD.write("%s\n" % address.get("1.0", END))
depot.set(None)
description.delete(0, END)
description.delete(0, END)
address.delete("1.0", END)

app = Tk()
app.title('Head-Ex Deliveries')
Label(app, text = "Depot:").pack()
depot = StringVar()
depot.set(None)
Radiobutton(app, variable = depot, text = "Cambridge, MA", value = "Cambridge, MA").
pack()
Radiobutton(app, variable = depot, text = "Cambridge, UK", value = "Cambridge, UK").
pack()
Radiobutton(app, variable = depot, text = "Seattle, WA", value = "Seattle, WA").
pack()
Label(app, text = "Description:").pack()
description = Entry(app)
description.pack()
Label(app, text = "Address:").pack()
address = Text(app)
address.pack()
Button(app, text = "Save", command = save_data).pack()
app.mainloop()

286 Chapter 8