code: def main(context, config_file, config_json, config_module, include):
      """Configs can be passed by file or directly from json.
      If neither --config-file or --config-json is passed,
      attempts to read the file from stdin.
  
      Example:
  
        pytext train < demo/configs/docnn.json
      """
      for path in include or []:
          # remove possible trailing / from autocomplete in --include
          add_include(path.rstrip("/"))
  
      context.obj = Attrs()
      context.obj.include = include
  
      def load_config():
          # Cache the config object so it can be accessed multiple times
          if not hasattr(context.obj, "config"):
              if config_module:
                  context.obj.config = import_module(
                      config_module
                  ).config
              else:
                  if config_file:
                      with PathManager.open(config_file) as fp:
                          config = json.load(fp)
                  elif config_json:
                      config = json.loads(config_json)
                  else:
                      eprint(
                          "No config file specified, reading from stdin"
                      )
                      config = json.load(sys.stdin)
                  # before parsing the config, include the custom components
                  for path in config.get("include_dirs", None) or []:
                      add_include(path.rstrip("/"))
                  context.obj.config = parse_config(config)
          return context.obj.config
  
      context.obj.load_config = load_config
  
imports: import json
  import pprint
  import sys
  import tempfile
  from importlib import import_module
  from pydoc import locate
  from typing import Dict, List, Optional, Union
  import click
  import torch
  from pytext import create_predictor
  from pytext.builtin_task import add_include
  from pytext.common.utils import eprint
  from pytext.config import ExportConfig, LATEST_VERSION, PyTextConfig
  from pytext.config.component import register_tasks
  from pytext.config.config_adapter import upgrade_to_latest
  from pytext.config.serialize import config_from_json, config_to_json, parse_config, pytext_config_from_json
  from pytext.config.utils import find_param, replace_param
  from pytext.data.data_handler import CommonMetadata
  from pytext.metric_reporters.channel import Channel, TensorBoardChannel
  from pytext.PreprocessingMap.ttypes import ModelType
  from pytext.task import load
  from pytext.utils.documentation import find_config_class, get_subclasses, pretty_print_config_class, replace_components, ROOT_CONFIG
  from pytext.utils.file_io import PathManager
  from pytext.workflow import export_saved_model_to_caffe2, export_saved_model_to_torchscript, get_logits, prepare_task_metadata, save_pytext_snapshot, test_model_from_snapshot_path, train_model
  from torch.multiprocessing.spawn import spawn
label_desc: Use image node_id 6 for calling a global function with example usage: main(context, config_file, config_json, config_module, include) and returns: context