[Tutor] sys.path..... - PATH, one more time...

[alan.gauld@bt.com]

> I have seen reference to sys.path and have looked at the 
> Library Reference but I am unsure how it works.

As I understand it Python appends the contents of PYTHONPATH 
to the sys.path.

I think it first inserts the standard values already loaded
from the registry, then adds the PYTHONPATH ones.

But I could be wrong about that bit. You can add values 
to sys.path at run time and it has the same effect as if you'd 
added them to PYTHONPATH. The advantage is that PYTHONPATH only 
gets set when you run AUTOEXEC.BAT. Setting sys.path takes 
immediate effect.

Alan g.