feat: File Handling Simple Inventory

Advanced Python Programming/FileHandlingInventory.py

@@ -0,0 +1,149 @@
+class Item:
+    def __init__(self, name, quantity):
+        self.name = name
+        self.quantity = quantity
+
+    def add_quantity(self, amount):
+        self.quantity += amount
+
+    def update_quantity(self, amount):
+        self.quantity = amount
+
+    def display_details(self):
+        print(f"Name: {self.name}, Quantity: {self.quantity}")
+
+
+class Inventory:
+    def __init__(self):
+        self.items = []
+
+    def add_item(self, name, quantity):
+        item = self.find_item(name)
+        if item:
+            item.add_quantity(quantity)
+            print("Item quantity updated successfully.")
+        else:
+            new_item = Item(name, quantity)
+            self.items.append(new_item)
+            print("Item added successfully.")
+
+    def find_item(self, name):
+        for item in self.items:
+            if item.name == name:
+                return item
+        return None
+
+    def update_item(self, name, quantity):
+        item = self.find_item(name)
+        if item:
+            item.update_quantity(quantity)
+            print("Item updated successfully.")
+        else:
+            print("Item not found.")
+
+    def generate_report(self):
+        if not self.items:
+            print("No items in the inventory.")
+        else:
+            print("Inventory Report:")
+            for item in self.items:
+                item.display_details()
+
+    def load_data(self, filename):
+        try:
+            with open(filename, 'r') as file:
+                for line in file:
+                    name, quantity = line.strip().split(',')
+                    self.add_item(name, int(quantity))
+            print("Data loaded successfully.")
+        except FileNotFoundError:
+            print("File not found.")
+
+    def save_data(self, filename):
+        with open(filename, 'w') as file:
+            for item in self.items:
+                file.write(f"{item.name},{item.quantity}\n")
+        print("Data saved successfully.")
+
+    def remove_item(self, name):
+        item = self.find_item(name)
+        if item:
+            self.items.remove(item)
+            print("Item removed successfully.")
+        else:
+            print("Item not found.")
+
+    def check_item_availability(self, name, quantity):
+        item = self.find_item(name)
+        if item:
+            if item.quantity >= quantity:
+                print("Item is available in the requested quantity.")
+            else:
+                print("Item is not available in the requested quantity.")
+        else:
+            print("Item not found.")
+
+    def sell_item(self, name, quantity):
+        item = self.find_item(name)
+        if item:
+            if item.quantity >= quantity:
+                item.update_quantity(item.quantity - quantity)
+                print("Item sold successfully.")
+            else:
+                print("Item is not available in the requested quantity.")
+        else:
+            print("Item not found.")
+
+
+def display_menu():
+    print("\nMenu:")
+    print("1. Add an item")
+    print("2. Update an item")
+    print("3. Generate a report")
+    print("4. Save data")
+    print("5. Remove an item")
+    print("6. Check item availability")
+    print("7. Sell an item")
+    print("8. Exit")
+
+
+def main():
+    inventory = Inventory()
+    inventory.load_data("inventory.txt")
+
+    while True:
+        display_menu()
+        choice = input("Enter your choice (1-8): ")
+
+        if choice == "1":
+            name = input("Enter item name: ")
+            quantity = int(input("Enter item quantity: "))
+            inventory.add_item(name, quantity)
+        elif choice == "2":
+            name = input("Enter item name to update: ")
+            quantity = int(input("Enter new quantity: "))
+            inventory.update_item(name, quantity)
+        elif choice == "3":
+            inventory.generate_report()
+        elif choice == "4":
+            inventory.save_data("inventory.txt")
+        elif choice == "5":
+            name = input("Enter item name to remove: ")
+            inventory.remove_item(name)
+        elif choice == "6":
+            name = input("Enter item name to check availability: ")
+            quantity = int(input("Enter desired quantity: "))
+            inventory.check_item_availability(name, quantity)
+        elif choice == "7":
+            name = input("Enter item name to sell: ")
+            quantity = int(input("Enter quantity to sell: "))
+            inventory.sell_item(name, quantity)
+        elif choice == "8":
+            print("Exiting the program.")
+            break
+        else:
+            print("Invalid choice. Please try again.")
+
+
+if __name__ == "__main__":
+    main()