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 handle command-line arguments and search for the customer data based on the provided name. If the number of arguments is not correct, it should print an error message.
  if __name__=="__main__":
      import sys
      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
  assert print_customer_data("Jane")==None
  assert print_customer_data("Alice")==None
output: def print_customer_data(name):
      customers = {
          "John": "John Doe, 123 Main St, Anytown, USA",
          "Jane": "Jane Smith, 456 Elm St, Othertown, USA",
          "Alice": "Alice Johnson, 789 Oak St, Somewhere, USA"
      }
      if name in customers:
          print(customers[name])
      else:
          print(f"Customer '{name}' not found.")