closing file opened by csv reader

[Paul Phillabaum]

I'd like to close the file the "reader" opens, but I can't figure out how to
reference it.

example:
    reader2=csv.reader(file('blah.csv'))

if reader2 was a normal file, I would do "reader2.close()" but that doesn't
work.

I won't show any of the more wacky attempts I made based on my limited
experience as they'd just reveal my total ignorance of this part of python.
I did look through the dictionary for the reader object but couldn't find
what I needed.

Thanks!

Paul