input: 
  class StoreItem:
      def __init__(self, item_id, name, price, description):
          self.item_id = item_id
          self.name = name
          self.price = price
          self.description = description
  
      def __str__(self):
          return f'{self.name}, ${self.price}'
  
      def to_dict(self):
          return {
              'item_id': self.item_id,
              'name': self.name,
              'price': self.price,
              'description': self.description
          }
  
  # Example usage:
  item = StoreItem(1, "Laptop", 999.99, "High-end laptop for professionals")
  print(item)  # Output: "Laptop, $999.99"
  print(item.to_dict())  # Output: {'item_id': 1, 'name': 'Laptop', 'price': 999.99, 'description': 'High-end laptop for professionals'}
  
output:     
  class StoreItem:
      def __init__(self, item_id, name, price, description):
          self.item_id = item_id
          self.name = name
          self.price = price
          self.description = description
  
      def __str__(self):
          return f'{self.name}, ${self.price}'
  
      def to_dict(self):
          return {
              'item_id': self.item_id,
              'name': self.name,
              'price': self.price,
              'description': self.description
          }
  
  # Example usage:
  item = StoreItem(1, "Laptop", 999.99, "High-end laptop for professionals")
  print(item)  # Output: "Laptop, $999.99"
  print(item.to_dict())  # Output: {'item_id': 1, 'name': 'Laptop', 'price': 999.99, 'description': 'High-end laptop for professionals'}
  