renaming files in a directory + subdirectories in python
<p>I have some files that I'm working with in a python script. The latest requirement is that I go into a directory that the files will be placed in and rename all files by adding a datestamp and project name to the beginning of the filename while keeping the original name.</p>

<p>i.e. foo.txt becomes 2011-12-28_projectname_foo.txt</p>

<p>Building the new tag was easy enough, it's just the renaming process that's tripping me up.</p>
