Trying to create a pos system that develop an application that verify that the right user enters the system, and provide ability for the cashier to perform sales related activities like selling an item, accepting returns, recording sales and updating on-hand inventory, handle payments. etc.
Here are my codes:
Login Verification
X | [a) Assignment
def login():
attempts = 0
user_id = input("Please enter your User ID: ")
password = input("Please enter your password: ")
while attempts < 3:
if user_id == "user" and password ==
"password":
print( Login successful!")
return True else:
attempts += 1 if attempts < 3:
print("Incorrect credentials. Please try again.")
else:
print("Too many attempts. Access denied.")
return False
Create Item Class
class Item:
def init(self, upc, description, item_max_qty, order_threshold, replenishment_order_qty, item_on_hand, unit_price, order_placed):
self.upc = upc
self.description = description
self.item_max_qty = item_max_qty
self.order_threshold = order_threshold
self.replenishment_order_qty = replenishment_order_aty
self.item_on_hand = item_on_ hand
self.unit price = unit price
self.order_placed = order _placed
def updateUnitOnHand(self, numberOfltems):
self.item_on_hand += numberOfltems
Load Inventory Data
login():
file = open("RetailStoreltemData.txt", "r")
inventory = {
for line in file:
upc, description, item_max_qty, order_threshold, replenishment_order_aty, item_on_hand, unit_price, order_placed = line.strip().split("")
item = Item(upc, description, item_max_aty, order_ threshold, replenishment _order_aty, item_on_hand, unit price, order_placed)
inventory[upc] = item
Start a new Sale
def newSale():
sale = {]
while True:
upc = input("Please enter the UPC of the item you'd like to add to your sale. Enter 'done' when finished: ")
if upc.lower == "done":
break
item = inventory upc]
if item.item_on_hand > 0:
item.updateUnitOnHand(-1)
if upc in sale:
sale[upc] += 1 else:
sale[upc] = 1
else:
return sale
print("Sorry, we are currently out of stock on this item.")
X
品
Assignment 7 - Designi
Finalize Sale
def finalizeSale(sale):
total = 0
print("In Your sale:")
for upc in sale:
item = inventory[upc]
price = item.unit_price * sale[upc]
total += price
print (f"(item.description]: {sale [upc]} × {item.unit_price) = (price]")
print (f"Total: {totall\n")
cash = input(Please enter the amount of cash given: ")
if float(cash) >= total:
return True else:
return False
Assic
Handle Returns
def returnltem(sale):
upc = input("Please enter the UPC of the item you'd like to return: ")
if upc in sale:
item = inventory[upc]
item.updateUnitOnHand(1)
sale[upc] -= 1 if sale[upc] == 0:
del sale[upc]
print("Item successfully returned.")
else:
print("This item is not in your sale.")
def returnAllitems (sale):
for upc in sale:
item = inventory [upc]
item.updateUnitOnHand(sale [upc])
sale.clear()
print("All items successfully returned.")
Generate Reports
def generatelnventory Report():
print ("\nINVENTORY REPORTIn")
print (*UPC\DESCRIPTION\MAX QTY\tORDER THRESHOLD\tREPLENISHMENT ORDER QTY\tON HAND\UNIT PRICE\ORDER PLACED\n") for upc in inventory:
item = inventory[upc]
print(f" (item.upc)\t(item.description]\t(item.item_max_qty|\t{item.order_threshold)\t(item.replenishment_order_aty|\titem.item_on_hand/\t{item.unit_price}\t(item.order_placed)")
def generateSalesReport:
print("\nSALES REPORT\n")
print("UPC\tDESCRIPTION\tUNIT PRICE\QTY SOLD\n")
total = 0
for upc in inventory:
item = inventory [upc]
if item.order_placed == "y".
aty_sold = int(item.item_max_qty) - int(item.item_on_hand)
print (fª(item.upc}\t(item.description}\t(item.unit_price|\taty_sold!")
total += aty_sold * float(item.unit price)
print(fIn Total Sales: (total)")
Main Program
An
if login0:
while True:
if option == "1".
sale = newSale()
if finalize.Sale(sale).
option = input("\n. Start a new sale\n2. Generate Inventory Report\n3. Generate Sales Report\n4. Quit\n\nPlease enter an option: ")
if finalizeSale(sale):
print("Thank you for your purchase!")
else:
print("Insufficient funds.")
return item(sale)
elif option == "2".
generate inventory Report()
elif option == "3":
generateSalesReport0
elif option == "4".
break else:
print(Invalid option. Please try again.")
print("\n Thank you for using the POS system. Have a great day!")
