input: def print_customer_data(name: str) -> None:
      """ Searches customer data by customer name and prints results.
      >>> print_customer_data("Alice")
      [('Alice', 'alice@example.com', '123-456-7890')]
      >>> print_customer_data("Bob")
      [('Bob', 'bob@example.com', '987-654-3210')]
      >>> print_customer_data("Charlie")
      []
      """
      pass
  
  # 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": ("alice@example.com", "123-456-7890"),
          "Bob": ("bob@example.com", "987-654-3210")
      }
      
      if name in customer_data:
          email, phone = customer_data[name]
          print([(name, email, phone)])
      else:
          print([])