# add or remove stock. adds or removes from current stock
elif choose == "3":
print(f"Update inventory for:\n{title} [1]\n{title2} [2]")
choice = input("> ")
if choice == "1":
print(f"For {title}:\nAdd inventory [1]\nDeduct inventory [2]")
choice1 = input("> ")
if choice1 == "1":
new_stock = input("New incoming stock\n> ")
new_stock = int(new_stock)
inven = book1.add_inventory(new_stock)
print(inven)
elif choice1 == "2":
lost = input("Out-going stock\n> ")
lost = int(lost)
inven = book1.deduct_inventory(lost)
print(inven)
else:
print("Bye")
if choice == "2":
print(f"For {title2}:\nAdd inventory [1]\nDeduct inventory [2]")
choice1 = input("> ")
if choice1 == "1":
new_stock = input("New incoming stock\n> ")
new_stock = int(new_stock)
inven = book2.add_inventory(new_stock)
print(inven)
elif choice1 == "2":
lost = input("Out going stock\n> ")
lost = int(lost)
inven = book2.deduct_inventory(lost)
