python equivalent of GNU 'cat' that shows unique lines
<p>Has anyone written the GNU <a href="http://unixhelp.ed.ac.uk/CGI/man-cgi?cat" rel="nofollow">cat</a> command in python and would be willing to share?  GNU cat actually does quite a bit &amp; I don't really feel like re-inventing the wheel today.  Yes, I did do a google search &amp; and after reading <a href="http://www.dailymail.co.uk/news/article-1205179/Pet-cat-Wilbur-swallowed-python-straying-neighbours-garden.html" rel="nofollow">too many sad stories of kittens vs snakes</a> I decided to try SO.</p>

<p>Edit: I'd like to modify it so that it only shows unique lines.</p>
