Copy python append folder?

Question

Python

I have a folder (let's call it SYSTEM for example). And there is a second folder, which contains a folder with files.
The SYSTEM folder contains many files and folders.
I want to copy (or move) from the second folder this folder with files to SYSTEM.
At the same time, so that if such a file exists, it is overwritten. If not, before was added.
I tried to do it via shutil. But he writes that such a folder already exists and does not allow copying.
Is there any way to bypass this error?
Roughly speaking, I need to drag and drop one folder into another in Windows, replacing those files that are repeated. (but only with Python)

Answer 1

Through..
os.rename('path/papka/, 'path/system/')
...you can also transfer files
But, I found a similar question