List folders with sorting

import os

path = "D:/PythonSuli"
folders = []
files = []
for i in os.listdir(r"D:\PythonSuli"):
    if os.path.isdir(os.path.join(path, i)):
        folders.append(i)
    else:
        files.append(i)

folder_content = sorted(folders, key=lambda x:x.lower()) + sorted(files, key=lambda x:x.lower())
print(folder_content)