How to load a code source modified package in Python?

Question

I have downloaded from github a package (scikit-lean) and put the code source in repository folder (Windows 7 64-bit).

After modifying the code source, how can I load the package into the IPython notebook for testing ?

1. Should I copy paste the modified in sites-packages folder ?
   (what about the current original scikit-lean package)

2. Can I add the modified folder to the Python path ?

3. How to manage versioning when loading package in Python since both are same names ?
   (ie: the original package vs the package I modified)

Sorry, it looks like beginner questions, but could not find anything how to start with

Answer 1

如果代码在一个名为file.py的文件中，则应该能够import file （如果不在正确的文件夹中，只需先在IPython中运行cd folder 。）