input: Write a function to generate a Python class for an online store item that includes fields for ID, name, price, and description, with methods to return the item's name and price as a string and to return the item's details as a dictionary.
  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
          }
  
  assert str(StoreItem(1, 'Book', 15.99, 'A great read')) == 'Book, $15.99'
  assert StoreItem(2, 'Pen', 2.49, 'Blue ink').to_dict() == {'item_id': 2, 'name': 'Pen', 'price': 2.49, 'description': 'Blue ink'}
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
          }