code: def main():
      assert "tensorflow" not in sys.modules
      parser = argparse.ArgumentParser()
      parser.add_argument("--layers", type=int, help="num layers")
      parser.add_argument(
          "--epochs", type=int, default=4, help="num epochs"
      )
      args = parser.parse_args()
      train(args.layers, args.epochs)
  
imports: import argparse
  import sys
  from wandb import magic
label_desc: Use image node_id 2 for calling a global function with example usage: main() without return types