Using a python code: When creating account: The username and password should be correct. It should also have an authenticator for the pin and if the inputted password or username is wrong show "Invalid entry. Please try again." and if it is still wrong in 3 tries, it'll say "Too many incorrect tries. Exiting program."

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Using a python code:

When creating account:
The username and password should be correct. It should also have an authenticator for the pin and if the inputted password or username is wrong show "Invalid entry. Please try again." and if it is still wrong in 3 tries, it'll say "Too many incorrect tries. Exiting program." 
 
Code:
from random import choice

print("1.Carbonara 100php \n2.Fries 80php\n3.Chicken nuggest 150php")
#take the choice of the item
itemChoice = int(input())
#Show the delivery services
print("Choose the delivery services :-\n1.Foodie panda\n2.Food deliver")
#Take the input for the delivery service
deliveryChoice = int(input())

#If the delivery choice is
if(deliveryChoice == 1):
    #Check for the item
    if(itemChoice == 1):
        #calculate discount for the carbonara
        Discount = 100*0.01
        print("You get discount of :- ",Discount,"php")
        print("Discounted price  :- ",100-Discount,"php")
        #calculate the final price
        finalPrice = (100 - Discount)+10
        print("Your final price adding the delivery charge is :- ",finalPrice,"php")
    elif(itemChoice == 2):
        if(itemChoice == 1):
            #calculate discount for the fries
            Discount = 80*0.01
            print("You get discount of :- ",Discount,"php")
            print("Discounted price  :- ",80-Discount,"php")
            #calculate the final price
            finalPrice = (80 - Discount)+10
            print("Your final price adding the delivery charge is :- ",finalPrice,"php")
    elif(choice == 3):
            #calculate discount for the nuggets
            Discount = 150*0.01
            print("You get discount of :- ",Discount,"php")
            print("Discounted price  :- ",150-Discount,"php")
            #calculate the final price
            finalPrice = (150 - Discount)+10
            print("Your final price adding the delivery charge is :- ",finalPrice,"php")
    else:
        #If inavlid input show the invalid messages
        print("Invalid choice for the item !")
#Calculate same as above for the Food deiver service with 4% discount
elif(deliveryChoice == 2):
    #Check for the item
    if(itemChoice == 1):
        #calculate discount for the carbonara
        Discount = 100*0.04
        print("You get discount of :- ",Discount,"php")
        print("Discounted price  :- ",100-Discount,"php")
        #calculate the final price
        finalPrice = (100 - Discount)+30
        print("Your final price adding the delivery charge is :- ",finalPrice,"php")
    elif(itemChoice == 2):
        if(itemChoice == 1):
            #calculate discount for the fries
            Discount = 80*0.04
            print("You get discount of :- ",Discount,"php")
            print("Discounted price  :- ",80-Discount,"php")
            #calculate the final price
            finalPrice = (80 - Discount)+30
            print("Your final price adding the delivery charge is :- ",finalPrice,"php")
    elif(choice == 3):
            #calculate discount for the nuggets
            Discount = 150*0.04
            print("You get discount of :- ",Discount,"php")
            print("Discounted price  :- ",150-Discount,"php")
            #calculate the final price
            finalPrice = (150 - Discount)+30
            print("Your final price adding the delivery charge is :- ",finalPrice,"php")
    else:
        #If inavlid input show the invalid messages
        print("Invalid choice for the item !")
else:
    #Print invalid choice for the inavlid choice of the service
    print("Invalid choice of the service ! ")
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