How to print something only if it exists?
Hans Mulder
hansmu at xs4all.nl
Fri Sep 7 05:37:28 EDT 2012
On 6/09/12 19:59:05, tinnews at isbd.co.uk wrote:
> I want to print a series of list elements some of which may not exist,
> e.g. I have a line:-
>
> print day, fld[1], balance, fld[2]
>
> fld[2] doesn't always exist (fld is the result of a split) so the
> print fails when it isn't set.
How about:
print day, fld[1], balance, fld[2] if len(fld) > 2 else ''
If you really want to avoid the keyword 'if', then you'd have to
do something like:
print day, fld[1], balance, (fld[2:3] or [''])[0]
That may be shorter, but it isn't very readable.
Hope this helps,
-- HansM
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