Python, find a file in the same directory
<p>Let's say I have the files a.py and b.txt in the same directory.  I can't garuntee <strong>where</strong> that directory is, but I know b.txt will be in the same directory as a.py.  a.py needs to access b.txt, how would I go about finding the path to b.txt?  Something like "./b.txt" won't work if the user runs the program from a directory other than the one it's saved in.</p>
