用Python实现类似Windows下的tree命令，获取目录树结构。

import osimport os.pathBRANCH = '├─'LAST_BRANCH = '└─'TAB = '│  'EMPTY_TAB = '   'def get_dir_list(path, placeholder=''):    folder_list = [folder for folder in os.listdir(path) if os.path.isdir(os.path.join(path, folder))]    file_list = [file for file in os.listdir(path) if os.path.isfile(os.path.join(path, file))]    result = ''    for folder in folder_list[:-1]:        result += placeholder + BRANCH + folder + '\n'        result += get_dir_list(os.path.join(path, folder), placeholder + TAB)    if folder_list:        result += placeholder + (BRANCH if file_list else LAST_BRANCH) + folder_list[-1] + '\n'        result += get_dir_list(os.path.join(path, folder_list[-1]), placeholder + (TAB if file_list else EMPTY_TAB))    for file in file_list[:-1]:        result += placeholder + BRANCH + file + '\n'    if file_list:        result += placeholder + LAST_BRANCH + file_list[-1] + '\n'    return resultif __name__ == '__main__':    print(os.path.dirname(os.getcwd()))    print(get_dir_list(os.path.dirname(os.getcwd())))

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