code: def main():
      # Read parameters
      x = args.x
  
      # Compute or learning
      y = x * x - 2 * x + 1
      print(
          "Formula: {}, input: {}, output: {}".format(
              "y = x * x - 2 * x + 1", x, y
          )
      )
  
      # Output the metrics
      print(y)
  
label_desc: Use image node_id 1 for calling a global function with example usage: main() without return types