code: def get_store_env_tmp():
      '''Returns an unused random filepath.'''
  
      tempdir = tempfile.gettempdir()
      temp_name = 'envstore{0:0>3d}'
      temp_path = unipath(tempdir, temp_name.format(random.getrandbits(9)))
      if not os.path.exists(temp_path):
          return temp_path
      else:
          return get_store_env_tmp(f get_store_env_tmp():
      '''Returns an unused random filepath.'''
  
      tempdir = tempfile.gettempdir()
      temp_name = 'envstore{0:0>3d}'
      temp_path = unipath(tempdir, temp_name.format(random.getrandbits(9)))
      if not os.path.exists(temp_path):
          return temp_path
      else:
          return get_store_env_tmp()
docs: Returns an unused random filepath.