code: def _env_list():
      # Based on fork_exec in subprocess.py.
      env = os.environ.copy()
      env["Y_PYTHON_ENTRY_POINT"] = ":main"
      env_list = []
      for k, v in env.items():
          if "=" not in k:
              env_list.append(os.fsencode(k) + b"=" + os.fsencode(v))
      return env_list
  
imports: import os
  import itertools
  import sys
  import weakref
  import atexit
  import threading
  from subprocess import _args_from_interpreter_flags
  from .None import process
label_desc: Use image node_id 19 for calling a global function with example usage: _env_list() and returns: env_list