Question

Using Python’s tkinter Graphical User Interface (GUI) module create a Python program to input the number of each type of coin a user has in their possession and then compute and display the total dollar and cents value of these coins. Your solution must accommodate Dollar, Half-Dollar, Quarter, Dime, Nickel, and Penny coins. Your solution must be robust against invalid inputs (i.e., negative value entered into any coin entry widget).

Answer 1

Please find the code below;;;

from tkinter import *

class Display() :
master = Tk();
e1 = Entry(master)
e2 = Entry(master)
e3 = Entry(master)
e4 = Entry(master)
e5 = Entry(master)
e6 = Entry(master)
result =Label(master, text="")
  
def __init__(self):
self.make_widgets();
  
def doCalculation(self):
number1 = 0;
total = 0
try :
number1 = int(self.e1.get());
number2 = int(self.e2.get());
number3 = int(self.e3.get());
number4 = int(self.e4.get());
number5 = int(self.e5.get());
number6 = int(self.e6.get());
if number1<0 or number2<0 or number3<0 or number4<0 or number5<0 or number6<0 :
self.result.config(text = "Negative value not allowed")
return
totalCent = number1*100 +number2*50 +number3*25 +number4*10 +number5*5 +number6
dollarValue = totalCent//100;
cents = totalCent - dollarValue*100
self.result.config(text = "Dollar : "+str(dollarValue)+" Cents : "+str(cents))
except:
self.result.config(text = "Error!!! Invalid number entered!!!!!")

def make_widgets(self):
Label(self.master, text="Dollars : ").grid(row=0, column=0)
self.e1.grid(row=0, column=1)
Label(self.master, text="Half Dollars : ").grid(row=1, column=0)
self.e2.grid(row=1, column=1)
Label(self.master, text="Quarter : ").grid(row=2, column=0)
self.e3.grid(row=2, column=1)
Label(self.master, text="Dime : ").grid(row=3, column=0)
self.e4.grid(row=3, column=1)
Label(self.master, text="Nickel : ").grid(row=4, column=0)
self.e5.grid(row=4, column=1)
Label(self.master, text="Penny : ").grid(row=5, column=0)
self.e6.grid(row=5, column=1)
Button(self.master, text='Calculate sum and average',command=self.doCalculation).grid(row=6, column=0)
self.result.grid(row=6, column=1)
mainloop( )
  
  
  
#CALLING CLASS FOR MAIN
Display();

  

output: