在Python中确定目录大小的最有效方法

import os

def get_directory_size(directory):
    total_size = 0
    for path, dirs, files in os.walk(directory):
        for f in files:
            fp = os.path.join(path, f)
            total_size += os.path.getsize(fp)
    return total_size

directory_path = '/path/to/directory'
size = get_directory_size(directory_path)
print(f"The size of directory '{directory_path}' is {size} bytes.")