input: Write a function to create a command-line application in Python that stores customer data and allows users to query by customer name. The function should parse command-line arguments to search for a customer and print the results. If the command-line input does not contain a customer name, it should print an error message.
  assert print_customer_data("Alice")=="Customer data for Alice\nName: Alice\nAddress: 123 Elm St.\nPhone: 555-1234"
  assert print_customer_data("Bob")=="Customer data for Bob\nName: Bob\nAddress: 456 Oak St.\nPhone: 555-5678"
  assert print_customer_data("Charlie")=="No customer found with name Charlie."
  assert print_customer_data([])==None
  assert print("Invalid arguments, please specify a customer name.")==None
output: def print_customer_data(name):
      customers = {
          "Alice": "Customer data for Alice\nName: Alice\nAddress: 123 Elm St.\nPhone: 555-1234",
          "Bob": "Customer data for Bob\nName: Bob\nAddress: 456 Oak St.\nPhone: 555-5678"
      }
      if isinstance(name, str):
          if name in customers:
              return customers[name]
          else:
              return "No customer found with name " + name + "."
      else:
          print("Invalid arguments, please specify a customer name.")