What will change it will do to my systerm if I install KCFcpp-py-wrapper ?

[gaopinghai]

Dear uoip:
First of all, thanks for your work very much. You write a python wrapper for KCFcpp. I want to make use of it. But I have a question that what kind of change will python setup.py build_ext --inplace will have on my systerm? How can I withdraw the changes?
I am new to github. I cannot find the issues column in the uoip/KCFcpp-py-wrapper, so I asked here. Looking forward to get your response ^_^