code: def shell_command(args):
      """
      Subcommand to execute shell commands in response to file system events.
  
      :param args:
          Command line argument options.
      """
      from watchdog.tricks import ShellCommandTrick
  
      if not args.command:
          args.command = None
  
      if args.debug_force_polling:
          from watchdog.observers.polling import (
              PollingObserver as Observer,
          )
      else:
          from watchdog.observers import Observer
  
      patterns, ignore_patterns = parse_patterns(
          args.patterns, args.ignore_patterns
      )
      handler = ShellCommandTrick(
          shell_command=args.command,
          patterns=patterns,
          ignore_patterns=ignore_patterns,
          ignore_directories=args.ignore_directories,
          wait_for_process=args.wait_for_process,
          drop_during_process=args.drop_during_process,
      )
      observer = Observer(timeout=args.timeout)
      observe_with(observer, handler, args.directories, args.recursive)
  
file_path: wandb/wandb/vendor/watchdog_0_9_0/wandb_watchdog/watchmedo.py
imports: import os.path
  import sys
  import yaml
  import time
  import logging
  from argh import arg, aliases, ArghParser, expects_obj
  from wandb_watchdog.version import VERSION_STRING
  from wandb_watchdog.utils import load_class
label_desc: Use image node_id 10 for calling a global function with example usage: shell_command(args) without return types