input: Write a function to print customer data by customer name.
  assert print_customer_data('Alice') == "Customer data for Alice: ..."
  assert print_customer_data('Bob') == "Customer data for Bob: ..."
  assert print_customer_data('Charlie') == "Customer data for Charlie: ..."
output: def print_customer_data(customer_name):
      return f"Customer data for {customer_name}: ..."