input: Write a function to create a command-line application in Python that stores customer data and allows customers to query by customer name. Provide a function named `print_customer_data` that takes a customer name as input and prints the corresponding customer data. The main application should handle command-line arguments and call `print_customer_data` when a valid customer name is provided.
  assert print_customer_data("Alice")==None
  assert print_customer_data("Bob")==None
  assert print_customer_data("Charlie")==None
  assert print_customer_data("David")==None
  assert print_customer_data("Eve")==None
output: def print_customer_data(customer_name):
      customer_data = {
          "Alice": "Data for Alice",
          "Bob": "Data for Bob",
          "Charlie": "Data for Charlie",
          "David": "Data for David",
          "Eve": "Data for Eve"
      }
      if customer_name in customer_data:
          print(customer_data[customer_name])