Confused about python modules and functions in it
<p>To describe my questions concisely, please have a look at examples below:</p>

<ol>
<li><p>Module <code>os</code> have a function <code>getcwd()</code> which returns current working directory. But there are no details about <code>os.getcwd()</code> in <code>/usr/lib/python2.7/os.py</code> file. Where is the implementation of the function? </p></li>
<li><p><code>os.path</code> is also a module in python , but in <code>/usr/lib/python2.7</code> directory, there is no file named <code>os.path</code>. So when you <code>import os.path</code> in your python script, which file is imported?</p></li>
</ol>

<p>Thank all your helps...</p>
