Question

Introduction The purpose of this assignment is to familiarize you with the writing Python scripts that demonstratest usage GUI programming. Long-Distance Calls A long-distance provider charges the following rates for telephone calls: Rate Category Daytime 6:00 a.m. through 5:59 p.m.) Evening (6:00 p.m. through 11:59 p.m.) Off-Peak (midnight through 5:59 a.m.) Rate per Minute $ 0.07 $ 0.12 $ 0.05 Write a GUI application that allows the user to select a rate category (from a set of radio buttons), and enter the number of minutes of the call into an Entry widget. An info dialog box should display the charge for the call. Program Input User will use a GUI to collect input. Program Calculation The program will determine the charges for its services based upon the radio buttons selected. tk • Daytime (6:00am - 5:59pm) Evening (6:00pm - 11:59pm) Off-Peak (12:00am - 5:59am) Enter the number of minutes: 15 Display Charges Quit

for python

Answer 1

Code in text form, as well as screenshots, have been provided to verify indentation.

Code:

import tkinter as tk

from tkinter import messagebox

#function that called when Display Charges button is clicked

def dispCharges():

    #check if a radio button is selected and the entry field contains a value

    if minutes.get() != '' and v.get != 0:

        tk.messagebox.showinfo("Total Charges", f'Your total charges = {int(minutes.get()) * v.get()}')

#create a tkinter window

root = tk.Tk()

#v stores the radio button option selected

v = tk.DoubleVar()

#minutes stores the value entered in the entry field

minutes = tk.StringVar()

#create radiobuttons

tk.Radiobutton(root, text='Daytime(6:00am - 5:59pm)', variable=v, value=0.07).pack()

tk.Radiobutton(root, text='Evening(6:00pm - 11:59pm)', variable=v, value=0.12).pack()

tk.Radiobutton(root, text='Off-Peak(12:00am - 5:59am)', variable=v, value=0.05).pack()

#container for label and entry field

mframe = tk.Frame(root)

mframe.pack()

#create label

tk.Label(mframe,text='Enter the number of minutes: ').pack(side=tk.LEFT)

#create entery field

tk.Entry(mframe, width=10, textvariable=minutes).pack()

#container for buttons

buttonframe = tk.Frame(root)  

buttonframe.pack()

#create buttons in the the buttonframe

tk.Button(buttonframe, text='Display Charges', command=dispCharges).pack(side=tk.LEFT)

tk.Button(buttonframe, text='Quit', command=root.destroy).pack()

#loop gui program

tk.mainloop()

Code Screenshot

import tkinter as tk from tkinter import messagebox #function that called when Display Charges button is clicked def dispCharges(): #check if a radio button is selected and the entry field contains a value if minutes.get() != " and v.get != 0:1 tk.messagebox.showinfo("Total Charges", f'Your total charges = {int(minutes.get() * v.get()}'), #create a tkinter window root = tk.Tk() #v stores the radio button option selected v = tk.DoubleVar() #minutes stores the value entered in the entry field minutes = tk.StringVar() #create radiobuttons tk. Radiobutton(root, text='Daytime ( 6:00am - 5:59pm)', variable=v, value=0.07).pack , tk.Radiobutton(root, text='Evening(6:00pm - 11:59pm)', variable=v, value=0.12).pack(), tk. Radiobutton(root, text='Off-Peak (12:00am - 5:59 am)', variable=v, value=0.05).pack #container for label and entry field mframe = tk. Frame (root) mframe.pack() #create label tk.Label(mframe, text='Enter the number of minutes: ').pack (side=tk.LEFT) #create entery field tk.Entry(mframe, width=10, textvariable=minutes).pack() #container for buttons buttonframe = tk.Frame (root) buttonframe.pack() #create buttons in the the buttonframe tk.Button(buttonframe, text='Display Charges', command=dispCharges). pack(side=tk. LEFT) tk.Button(buttonframe, text='Quit', command=root.destroy).pack() #loop gui program tk.mainloop()

Output Screenshot

- 0 x Daytime(6:00am - 5:59pm) Evening(6:00pm - 11:59pm) Off-Peak(12:00am - 5:59am) Enter the number of minutes: Display Charges Quit

- x Total Charges х Your total charges = 1.05 Daytime(6:00am - 5:59pm) Evening(6:00pm - 11:59pm) Off-Peak(12:00am - 5:59am) Enter the number of minutes: 15 Display Charges Quit OK