使用walk来计算文件夹的总大小

import os
g = os.walk('D:\python_22')
size = 0
for i in g :
    path,dir_lst,name_lst = i
    for name in name_lst:
        abs_path = os.path.join(path,name)
        size += os.path.getsize(abs_path)
print(size)