code: def requirements_met(requirements_file):
      """
      Does a simple parse of a requirements.txt file to determine if all rerqirements in it
      are already installed. Returns True if so, False if not installed or parsing fails.
      """
  
      import importlib.metadata
      import packaging.version
  
      with open(requirements_file, "r", encoding="utf8") as file:
          for line in file:
              if line.strip() == "":
                  continue
  
              m = re.match(re_requirement, line)
              if m is None:
                  return False
  
              package = m.group(1).strip()
              version_required = (m.group(2) or "").strip()
  
              if version_required == "":
                  continue
  
              try:
                  version_installed = importlib.metadata.version(
                      package
                  )
              except Exception:
                  return False
  
              if packaging.version.parse(
                  version_required
              ) != packaging.version.parse(version_installed):
                  return False
  
      return True
  
imports: import logging
  import re
  import subprocess
  import os
  import shutil
  import sys
  import importlib.util
  import importlib.metadata
  import platform
  import json
  from functools import lru_cache
  from modules import cmd_args, errors
  from modules.paths_internal import script_path, extensions_dir
  from modules.timer import startup_timer
  from modules import logging_config
label_desc: Use image node_id 17 for calling a global function with example usage: requirements_met(requirements_file) and returns: True, False, False, False