python如何将选定目录下的一级子目录名称提取出来，并将子目录的子目录也就是二级子目录的名称也提取出来，导出为txt文本，以上方形式呈现，可以选择导出文本的路径。

1. Python需求的任务

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python如何将选定目录下的一级子目录名称提取出来，并将子目录的子目录也就是二级子目录的名称也提取出来，导出为txt文本 </font

我要将该目录中的所有文件名称导出来，二级名称也导出

导出的md代码如下：

- **000-Extract-photo from word**
	* Extract-photo from word.py
	* photo
	* photo.docx
	* subdirectories.txt
	* tempCodeRunnerFile.py

- **001-Export photo from word**
	* image
	* photo_word.py
	* subdirectories.txt
	* tempCodeRunnerFile.py
	* 数字图像处理.docx

- **002-copyfile**
	* copyfile.py
	* copyfileA_toB.py
	* file
	* Image-0.png
	* Image-1.png
	* Image-2.png
	* Image-3.png
	* Image-4.png
	* Image-5.png
	* subdirectories.txt

- **003-copyfileto-alldictory**
	* copy3.py
	* dir
	* read_filename.py
	* subdirectories.txt
	* tempCodeRunnerFile.py
	* template.png

- **004-translate**
	* OIP-C.jpg
	* subdirectories.txt
	* translate.py

- **005-convert_music**
	* mp3
	* mp3_to_wav.py
	* subdirectories.txt
	* tempCodeRunnerFile.py
	* wav

- **006-get_path**
	* getpath.py
	* mp3
	* subdirectories.txt
	* tempCodeRunnerFile.py

- **007-grab_bili**
	* grab_video.py
	* subdirectories.txt

- **008-Clear_thefolder**
	* clear-folder.py
	* frv
	* subdirectories.txt
	* tempCodeRunnerFile.py

- **009-Create fixed .xx file**
	* creat-.xx-file.py
	* subdirectories.txt

- **010-Slide photo to small**
	* Excel文件售卖.png
	* slidephoto.py
	* subdirectories.txt

- **011-grab_work**
	* subdirectories.txt
	* work.py

- **012-Creat_000~999_fix.xxfile**
	* 0000.py
	* subdirectories.txt
	* template.py

- **013-Convert-video-to-mp3**
	* convert_mp4to3.py
	* subdirectories.txt

- **014-copytexttofile**
	* copyfile.py
	* subdirectories.txt

- **015-sendphototoevery-dictory**
	* send-photo.py
	* subdirectories.txt

- **016-Components-photoandmp3**
	* composepho