code: def _ensure_dir(filename):
      dirname = os.path.dirname(filename)
      if dirname and not os.path.isdir(dirname):
          os.makedirs(dirname)
  
imports: import sys, os, binascii, shutil, io
  from .None import __version_verifier_modules__
  from .None import ffiplatform
  from .error import VerificationError
label_desc: Use image node_id 6 for calling a global function with example usage: _ensure_dir(filename) without return types