input: 
  def describe_item(item) -> str:
      """ Given an instance of the StoreItem class, return a string describing the item in the format:
      "Item ID: <item_id>, Name: <name>, Price: $<price>, Description: <description>".
      
      >>> from StoreItem import StoreItem
      >>> item = StoreItem(1, "Laptop", 999.99, "A high-performance laptop for everyday use.")
      >>> describe_item(item)
      'Item ID: 1, Name: Laptop, Price: $999.99, Description: A high-performance laptop for everyday use.'
      """
  
output:     return f"Item ID: {item.item_id}, Name: {item.name}, Price: ${item.price}, Description: {item.description}"