input: def print_customer_data(name):
      """ Command-line application that takes a customer name as an input and prints the customer's data if found.
      >>> print_customer_data("Alice")
      Customer data: Alice 25 Female
      >>> print_customer_data("Bob")
      Customer data: Bob 30 Male
      >>> 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": "25 Female",
          "Bob": "30 Male"
      }
      
      if name in customer_data:
          print(f"Customer data: {name} {customer_data[name]}")
      else:
          print("Customer not found")