python通过os.walk() 遍历出多级目录下所有文件绝对路径

def get_all_abs_path(source_dir):
    path_list = []
    for fpathe, dirs, fs in os.walk(source_dir):
        for f in fs:
            p = os.path.join(fpathe, f)
            path_list.append(p)
    return path_list