آموزش استفاده و ایجاد فایل XML در پایتون

				
					import xml.etree.ElementTree as ET
import os

# تابع برای بارگذاری اطلاعات از فایل XML
def load_products():
    if os.path.exists('products.xml'):
        tree = ET.parse('products.xml')
        root = tree.getroot()
        return root
    return ET.Element("Products")

# تابع برای ذخیره اطلاعات در فایل XML
def save_products(root):
    tree = ET.ElementTree(root)
    tree.write('products.xml', encoding="utf-8", xml_declaration=True)

# تابع برای افزودن محصول
def add_product(root):
    name = input("Enter product's name: ")
    price = input("Enter product's price: ")
    stock = input("Enter product's stock: ")
    
    product = ET.SubElement(root, "Product", attrib={"id": str(len(root) + 1)})
    name_elem = ET.SubElement(product, "Name")
    name_elem.text = name
    price_elem = ET.SubElement(product, "Price")
    price_elem.text = price
    stock_elem = ET.SubElement(product, "Stock")
    stock_elem.text = stock
    
    print("Product added successfully!")

# تابع برای نمایش اطلاعات محصولات
def show_products(root):
    if len(root) == 0:
        print("No products found.")
        return
    
    for product in root:
        print(f"ID: {product.attrib['id']}")
        print(f"Name: {product.find('Name').text}")
        print(f"Price: {product.find('Price').text}")
        print(f"Stock: {product.find('Stock').text}")
        print("-" * 20)

# تابع اصلی
def main():
    root = load_products()
    
    while True:
        print("\nProduct Management System")
        print("1. Add Product")
        print("2. Show Products")
        print("3. Save and Exit")
        
        choice = input("Enter your choice: ")
        
        if choice == '1':
            add_product(root)
        elif choice == '2':
            show_products(root)
        elif choice == '3':
            save_products(root)
            print("Data saved. Exiting...")
            break
        else:
            print("Invalid choice. Please try again.")

if __name__ == "__main__":
    main()