input: Write a function to create a command-line application in Python that stores customer data and allows customers to query by customer name. The function should take a customer name as input and return the corresponding customer data. If no arguments are provided, it should print a message indicating invalid arguments.
  
  def print_customer_data(name):
      # 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.")
  
  assert print_customer_data("John")==None  # Assuming the function prints directly, so assert against None
  assert print_customer_data("Jane")==None  # Assuming the function prints directly, so assert against None
  assert print_customer_data("Doe")==None  # Assuming the function prints directly, so assert against None
  assert print_customer_data("Alice")==None  # Assuming the function prints directly, so assert against None
  assert print_customer_data("Bob")==None  # Assuming the function prints directly, so assert against None
output: def print_customer_data(name):
      customers = {
          "John": "John Doe, 123 Main St, New York, NY",
          "Jane": "Jane Smith, 456 Elm St, Los Angeles, CA",
          "Doe": "Doe Johnson, 789 Oak St, Chicago, IL",
          "Alice": "Alice Brown, 101 Pine St, Houston, TX",
          "Bob": "Bob White, 202 Maple St, Phoenix, AZ"
      }
      if name in customers:
          print(customers[name])
      else:
          print(f"No data found for customer: {name}")