Thanks for the help. I'm fairly new to programming (which you probably could have guessed...). When I realized that you could use a StringIO instance as if it were a file, I wanted to try some of the same techniques on it as I would with a file. In this case, I wanted to use a "for line in testfile" construction to iterate over the StringIO instance. (I did find a better way for my particular case, one that didn't involve StringIO at all.) When I got that particular error, I suspected that it had something to do with the relative newness of the 'with' statement.
If this is something that should be considered for addition in the future, is there somewhere specific I should suggest that? -- http://mail.python.org/mailman/listinfo/python-list
