title: how the python interpreter find the modules path?
body: <p>I'm new to python, and I find that to see the import search paths, you have to import the <code>sys</code> module and than access the list of paths using <code>sys.path</code>, if this list is not available until I explicitly import the <code>sys</code> module, so how the interpreter figure out where this module resides.
  thanks for any explanation.</p>