do this with list comp?

[Dan Bishop]

"Michael T. Babcock" <mbabcock at fibrespeed.net> wrote in message news:<mailman.107.1071248716.9307.python-list at python.org>...
> python-list-request at python.org wrote:
> 
> > From: John Hunter <jdhunter at ace.bsd.uchicago.edu>
> > Date: Fri, 12 Dec 2003 10:46:58 -0600
> >
> >I want to replace all empty fields in a CSV line with 'NULL'.
...
> >I am wondering if there is a way to do it with list comprehensions.  I
> >know how I would do it with a ternary operator.....  
> 
> def replace_blank_with_null(data):
>     if not data:
>        return "NULL"
>     return data
> 
> new_list = [ replace_blank_with_null(line) for line in old_list ]
> 
> Or something more like:
> 
> line_items = [ replace_blank_with_null(item) for item in line.split(",") ]

Or:

line_items = [item or 'NULL' for item in line.split(',')]