I'm getting more comfortable with Flask, so I decided to experiment with Google App Engine + Flask + HandsOnTable.
Here's the application I made: http://twocolumnmatch.appspot.com/match
It takes the contents of the 2nd column and matches it to the rows of the first column. Just press the "Match" button to see what it does.
I've found myself doing what this application does a few times, but I manually create two python lists and compare them in IDLE. This application streamlines that process quite a bit.
Here's the code: https://github.com/pawl/2ColumnMatch