If you are comparing libs / vs. Lib /, you will notice that the latter is filled with * .py files, and the former has * .lib files. Further research using a text editor will show that * .py files are readable (I hope), but * .lib files are not.
And that is really the difference. If you want to know more, .lib files are static link libraries that are used to create DLL files, C extensions, and all this good stuff. Head for the rabbit hole if it interests you. docs :
, . , spam.py , sys.path. sys.path :
- , script ( ).
- PYTHONPATH ( , PATH).
- .
% PATH% % PYTHONPATH%, , ; , python % PATH% , , , . , Python33/libs/, , .