ITECH1400-Foundations of Programming

Assignment Part 1 Details – Class Design

RecycleableItem Properties (All)

 RecycleableItem Properties (Key)

RecycleableItem Class Diagram

RecyclingMachine Class Diagram

Assignment Part 2 – Activity Flowchart

Assignment Part 3 – Software Implementation

Separate python file are provided of the software implementation

Assignment Part 4 – Code Explanation and Use

#import RecyclableItem module

from RecyclableItem import RecyclableItem

class RecyclingMachine:

    #List declared to hold all the recycled product

    recycledProductList=[]

    #List to hold all type of item which can be recycled

    productType=['Can', 'Bottle', 'Paper'];

    #List to hold the value of each recycled items

    productValue=[0.2,0.5, 0.1];

    #variable to hold total payout of particular user

    totalPayout=0;

    #This is the declaration of the constructor to initialize recycled list

    def __init__(self):

        #Initialize the checked out product list with the empty list

        self.recycledProductList=[];

    #This is accept the product and add it into the list

    def accept_product(self, recyclableItem):

        self.recycledProductList.append(recyclableItem);

    #This method is to select the particular product in the list and add it into the list

    def select_product(self, selectedProduct, quantity):

        #get the index of the selected type product from the list of products

        index = self.productType.index(selectedProduct)

        #Create the instance of the recyclable product with its name, quanitiy and fees.

        item = RecyclableItem(selectedProduct, quantity, self.productValue[index])

        #acept the product

        self.accept_product(item)

        #calculate the product

        self.payout(int(quantity)*float(self.productValue[index]))

        #Print the message

        print("You added "+str(quantity)+" "+str(selectedProduct)+"(s) for $"+str(self.productValue[index])+" each. You have $"+str(self.totalPayout)+".")

    #This method will be used to calculate the total payout or the user

    def payout(self, amount):

            self.totalPayout = self.totalPayout + amount

    #This method will be used print the summary of the total item recycled

    def print_receipt(self):

        print("\n-----------------Final Receipt---------------------\n")

        totalItems=0;

        for item in self.recycledProductList:

            print(str(item.get_quantity())+" "+str(item.get_type())+"s               "+str(float(int(item.get_quantity())*float(item.get_fees()))))

            totalItems=int(totalItems)+int(item.get_quantity())

        print("Number of items    "+str(totalItems))

        print("Amount paid:       $"+str(self.totalPayout));

        print("\nThank you for recycling at FedUni!\n")

class RecyclableItem:

    #This instance variable used to hold the value of product type

    productType="";

    #This is instance variable which is used to hold the product quantity

    quantity=""

    #Variable to hold recycling fee of one unit

    fees=0

    #This is RecyclableItem of the product class which is being used for the initialization of the product

    def __init__(self, productType, quantity, fees):

        #this statement used to initialize the productType variable

        self.productType=productType

        #This is used to initialize the quantity of the item

        self.quantity=quantity

        #This is used to initialize the recycling fee of the product per unit

        self.fees=fees

    #This method used to get the item recycling fee

    def get_fees(self):

        return self.fees

    #This item used to get the quantity of the particular instance

    def get_quantity(self):

        return self.quantity

    #This item used to get the type of the product

    def get_type(self):

        return self.productType;

#Import the RecyclingMachine

from RecyclingMachine import RecyclingMachine

#Create the instance of the RecyclingMachine

recycle = RecyclingMachine()

#Run while loop unti

while(True):

    #Get the total balance of the user

    balance = recycle.totalPayout;

    #Take user choice

    choice = input("\nBalance: $"+str(balance)+" Please select a product: (Can, Bottle, Paper, Stop):")

    #Check if user opt to stop the recycling

    if(choice.upper() == "STOP"):

        #If user chosen to Stop the print the receipt of the user

        recycle.print_receipt()

        #Take user's next choice

        nextChoice = input("(N)ext customer, or (Q)uit? ")

        #Check if user chosen to quit

        if(nextChoice == 'q' or nextChoice =='Q'):

            #Exit from the program

            exit()

        #Check if user chosen new customer

        elif(nextChoice == 'n' or nextChoice == 'N'):

            #Reinitialize the RecyclingMachine instance

            recycle = RecyclingMachine()

    #If user chose some other item type

    else:

        #Take quantity of item type from user

        quantity = input("\nHow many "+choice+"s do you have?: ")

        #Accept all quantity for Recycling

        for i in range(0,int(quantity)):

            #Print the acceptance message

            print(choice +' accepted')

        #call method of select the product

        recycle.select_product( choice, quantity)

Assignment 1 – FedUni Checkout

Student name:                                                                    Student ID: