FedUni Checkout – Assignment

Assignment Part 1 Details – Class Design

Assignment Part 1 Details – Class Design

Insert your list/table of possible product properties here…

Product Properties (All)

 Insert your list/table of key product properties here…

Product Properties (Key)

 Complete the class diagram of your final Product class here…

Product Class DiagramCheckoutRegister Class Diagram

Complete the class diagram of your final CheckoutRegister class here…Assignment Part 2 – Activity FlowchartAssignment Part 3 – Software Implementation

The .py files are attached  (3 .py files)

Assignment Part 4 – Code Explanation and Use

Update the below code to insert comments describing what the code is doing – for each line starting with a hash symbol (#) you should write your code comments after the hash. You may add a second line of comments if you require more space.

# Function to: Input a number and convert to float type

def get_float(prompt): 

    # initialize value to 0.0

    value = float(0.0) 

    # loop and check  if value > 0.0 or check validity of floating value using exception

    while True:

        try:

            # input from keyboard and convert to float type and store it in value

            value = float(input(prompt)) 

            # check if value is negative

            if value < 0.0:

                print(“We don’t accept negative money!”)

                continue 

            # if value is negative, print the error message and exit the loop

            break 

        # catch the exception

        except ValueError:

            print(‘Please enter a valid floating point value.’) 

    # return value when valid floating number is inputted and value is > 0.0

    return value 

# Function to: Add the product to shopping cart bag

def bag_products(product_list):   
    # create list of shopping bag and products which are not stored in shopping bag

    bag_list = []

    non_bagged_items = []

    MAX_BAG_WEIGHT = 5.0 

    # loop through the product list

    for product in product_list: 

        # if weight is > MAX_BAG_WEIGHT.

        # then remove product from the product list and add product

        # to non-bagged list

        if product.weight > MAX_BAG_WEIGHT:

            product_list.remove(product)

            non_bagged_items.append(product) 

    # create list of current shopping bag and set the current bag weight = 0.0

    current_bag_contents = []

    current_bag_weight = 0.0 

    # loop till the length of the product_list > 0

    while len(product_list) > 0: 

        # store product at index 0 to temp_product variable and

        # remove the product stored in temp_product variable from the product list

        temp_product = product_list[0]

        product_list.remove(temp_product) 

        # check if current bag weight + weight of the temp_product < MAX_BAG_WEIGHT 

        if current_bag_weight + temp_product.weight < MAX_BAG_WEIGHT: 

            # add temp_product to current bag and add the weight of temp_product weight      

            # to the current bag weight

            current_bag_contents.append(temp_product)

            current_bag_weight += temp_product.weight          

            # check if length of the product list = 0 and store the current bag list

            # to the bag list

            if (len(product_list) == 0):

                bag_list.append(current_bag_contents)               

        # check if current bag weight + temp_product weight > MAX_BAG_WEIGHT

        # then store current bag list to the bag list

        else:

            bag_list.append(current_bag_contents) 

            # reset the current bag list to null and current bag weight = 0.0

            current_bag_contents = []

            current_bag_weight = 0.0 

    # loop through the bag list to print the products stored in the shopping bag

    for index, bag in enumerate(bag_list):

        output = ‘Bag ‘ + str(index + 1) + ‘ contains: ‘ 

        # print product name stored in the bag

        for product in bag:

            output += product.name + ‘t’

        print(output, ‘n’) 

    # check if length of the non bagged items > 0 then print the non bagged products

    if (len(non_bagged_items) > 0):

        output = ‘Non-bagged items: ‘

        # loop through to print non bagged products name

        for item in non_bagged_items:

            output += item + ‘t’

        print(output,’n’)

Assignment 1 – FedUni Checkout

Student name:                                                                    Student ID: