Cannot delete folder created through python os.mkdir

I have an issue with folders created through a Python script that cannot be removed.

I have a python script that runs other scripts using the 'runpy' module. The scripts will then create a folder using os.mkdir and a lot of matplotlib figures will be saved in there. When the script has run, and I try to delete the folder, I'm not allowed.

Through os.listdir the folder will show up:

In[5]: import os
       'aux' in os.listdir(r'C:\Python\Repositories\model-enveloper\Test')
Out[5]: True

But trying to delete the folder with os.rmdir (not possible through windows explorer either):

In[6]: os.rmdir(r'C:\Python\Repositories\model-enveloper\Test\aux')
Traceback (most recent call last):
  File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py", line 2963, in run_code
    exec(code_obj, self.user_global_ns, self.user_ns)
  File "<ipython-input-6-c835caa088bf>", line 1, in <module>
    os.rmdir(r'C:\Python\Repositories\model-enveloper\Test\aux')
FileNotFoundError: [WinError 2] The system cannot find the file specified: 'C:\\Python\\Repositories\\model-enveloper\\Test\\aux'

This error occurred because of these reasons.

1. You need to give admin permission to delete that directory.
2. rmdir use for to delete Empty directories. make sure your mentioned directory is empty. If it is true use shutil.rmtree(<directory>) to remove directry with contents.

import shutil
shutil.rmtree("<directory>")

3. Try C:/Python/Repositories/model-enveloper/Test/aux instead of C:\Python\Repositories\model-enveloper\Test\aux @Bakuriu has mentioned it.

There for you can try to delete it like this

import os
os.rmdir(os.path.join("C:/Python/Repositories/model-enveloper/Test", "aux"))