How to create safely a nested directory

# remember those lines
#from pathlib import Path
#Path("/root/dirA/dirB").mkdir(parents=True, exist_ok=True)

import os

# funcion que recibe un cadena y crea un direcorio que recibe como nombre dicha cadena
def make_directories(file):
  file = str(file)
  file_path = os.path.join(base_dir, file)
  if os.path.exists(file_path) == False:
    os.mkdir(file_path)
    print('Directorio creado :' + file_path)
  else:
    print('El directorio: ' + file_path + ' ya existe!!!')


from pathlib import Path
# creacion de directorios en 2 niveles 
def make_2_level_directories(root_folder_name, directories_to_make=[]):
  new_path_dir= []
  new_path_root = file_path = os.path.join(base_dir, root_folder_name)
  Path(new_path_root).mkdir(parents=True, exist_ok=True)
  if len(directories_to_make) == 0:
    return print("No hay subdirectorios para crear")
  
  for file in  directories_to_make :
    new_path = os.path.join(root_folder_name,file)
    new_path_dir.append(new_path)
  for file in new_path_dir:
    make_directories(file) # no olvidar cambiar el directorio base