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# Requirements:
# * The system should allow to update or add the products to the inventory
# * Each Product should have
# * Id
# * Name
# * Model
# * Cost Price
# * Selling Price
# * Number of Items
# * The System should allow to sell items which means the inventory should be updated.
# * The system should show the report of items sold
import os
products_file = "products.csv"
products_file_exists = os.path.exists(products_file)
products = []
while True:
menu = """
Enter the number
0 => View Products
1 => Add Product
2 => Update Product
3 => Delete Product
4 => Sell Items
5 => Report
6 => Exit
"""
choice = input(menu)
if choice == '0':
if not products_file_exists:
print('No items in inventory')
continue
# open the file in the read mode
with open(file= products_file, mode='r') as product_file_reader:
products_file_lines = product_file_reader.readlines()
for products_file_line in products_file_lines:
print(products_file_line)
elif choice == '1':
# to write the files, use a(append) mode
id = int(input('Enter the product id = '))
name = input('Enter the product name = ')
model = input('Enter the model = ')
cp = float(input('Enter the cost price = '))
sp = float(input('Enter the sell price = '))
quantity = int(input('Enter the availablie quantity = '))
product = [id,name,model,cp, sp,quantity]
products.append(product)
with open(file= products_file, mode= 'a') as products_file_appender:
if not products_file_exists:
products_file_appender.writelines(['id,name,model,cp,sp,quanity\n'])
products_file_exists = True
products_file_appender.writelines([f"{id},{name},{model},{cp},{sp},{quantity}\n"])
elif choice == '2' :
product_id = int(input('Enter the product id to update quantity = '))
index = -1
updated_product = []
for product in products:
# find product by id
index += 1
if product[0] == product_id:
found = True
new_quantity = int(input('Enter the quantity to be added = '))
product[5] += new_quantity
updated_product = product
break
products[index] = updated_product
elif choice == '3':
pass
elif choice == '4':
pass
elif choice == '5':
pass
else:
exit(0)
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