input: 
  import sys 
    
  def print_customer_data(name): 
      """ Searches customer data by customer name and prints the results.
      >>> print_customer_data("Alice")
      Name: Alice, ID: 12345, Balance: $500.00
      >>> print_customer_data("Bob")
      Name: Bob, ID: 67890, Balance: $750.00
      >>> print_customer_data("Charlie")
      Customer not found.
      """
      # Code for searching customer data by customer name and printing results 
      ...
  
  # Main function for the customer search application
  if __name__=="__main__": 
      # Get command line arguments 
      args = sys.argv 
      
      if len(args) == 2: 
          name = args[1]
          print_customer_data(name) 
      else: 
          print("Invalid arguments, please specify a customer name.")
  
output:     customer_data = {
          "Alice": {"ID": 12345, "Balance": 500.00},
          "Bob": {"ID": 67890, "Balance": 750.00}
      }
      
      if name in customer_data:
          customer = customer_data[name]
          print(f"Name: {name}, ID: {customer['ID']}, Balance: ${customer['Balance']:.2f}")
      else:
          print("Customer not found.")