code: def print_results_from_args(args: argparse.Namespace):
      """
      Prints results from an `argparse.Namespace` object.
      """
      path = args.path
      metrics_name = args.metrics_filename
      keys = args.keys
  
      results_dict = {}
      for root, _, files in os.walk(path):
          if metrics_name in files:
              full_name = os.path.join(root, metrics_name)
              with open(full_name) as file_:
                  metrics = json.load(file_)
              results_dict[full_name] = metrics
  
      sorted_keys = sorted(list(results_dict.keys()))
      print(f"model_run, {', '.join(keys)}")
      for name in sorted_keys:
          results = results_dict[name]
          keys_to_print = (str(results.get(key, "N/A")) for key in keys)
          print(f"{name}, {', '.join(keys_to_print)}")
  
file_path: allennlp/allennlp/commands/print_results.py
imports: import argparse
  import json
  import logging
  import os
  from allennlp.commands.subcommand import Subcommand
label_desc: Use image node_id 1 for calling a global function with example usage: print_results_from_args(args) without return types