Inventory Management System

Inventory Management System (IMS)

Requirements

• Python 3.x
• Basic knowledge of Python

Code

class Item:
def __init__(self, name, quantity, price):
    self.name = name
    self.quantity = quantity
    self.price = price
def __str__(self):
    return f"Item(name={self.name}, quantity={self.quantity}, price={self.price})"

class Inventory:
def __init__(self):
    self.items = {}
def add_item(self, name, quantity, price):
    if name in self.items:
        self.items[name].quantity += quantity
    else:
        self.items[name] = Item(name, quantity, price)
    print(f"Added {quantity} of {name}.")
def update_item(self, name, quantity=None, price=None):
    if name in self.items:
        if quantity is not None:
            self.items[name].quantity = quantity
        if price is not None:
            self.items[name].price = price
        print(f"Updated {name}.")
    else:
        print(f"Item {name} not found.")
def delete_item(self, name):
    if name in self.items:
        del self.items[name]
        print(f"Deleted {name}.")
    else:
        print(f"Item {name} not found.")
def view_inventory(self):
    if not self.items:
        print("Inventory is empty.")
    else:
        for item in self.items.values():
            print(item)
def main():
inventory = Inventory()
while True:
    print("\nInventory Management System")
    print("1. Add Item")
    print("2. Update Item")
    print("3. Delete Item")
    print("4. View Inventory")
    print("5. Exit")
    choice = input("Choose an option: ")
    if choice == '1':
        name = input("Enter item name: ")
        quantity = int(input("Enter quantity: "))
        price = float(input("Enter price: "))
        inventory.add_item(name, quantity, price)
    elif choice == '2':
        name = input("Enter item name: ")
        quantity = input("Enter new quantity (leave blank to skip): ")
        price = input("Enter new price (leave blank to skip): ")
        inventory.update_item(name, quantity=int(quantity) if quantity else None,
                              price=float(price) if price else None)
    elif choice == '3':
        name = input("Enter item name: ")
        inventory.delete_item(name)
    elif choice == '4':
        inventory.view_inventory()
    elif choice == '5':
        print("Exiting...")
        break
    else:
        print("Invalid choice. Please try again.")
if __name__ == "__main__":
main()

How It Works

1. Classes:
   • Item: Represents an individual item with attributes for name, quantity, and price.
   • Inventory: Manages a collection of items, allowing you to add, update, delete, and view items.
2. Functions:
   • add_item(): Adds a new item or updates the quantity if it already exists.
   • update_item(): Updates the quantity and/or price of an existing item.
   • delete_item(): Deletes an item from the inventory.
   • view_inventory(): Displays all items in the inventory.
3. Main Loop: The main() function provides a simple console menu for user interaction.

Running the Code

1. Save the code to a file named inventory_management.py.
2. Run the script using Python:

python inventory_management.py