What's an elegant way to test for list index existing?

Chris Green cl at isbd.net
Sun Sep 30 06:14:37 EDT 2018


Chris Angelico <rosuav at gmail.com> wrote:
> On Sat, Sep 29, 2018 at 12:21 PM Chris Green <cl at isbd.net> wrote:
> >
> > I have a list created by:-
> >
> >     fld = shlex.split(ln)
> >
> > It may contain 3, 4 or 5 entries according to data read into ln.
> > What's the neatest way of setting the fourth and fifth entries to an
> > empty string if they don't (yet) exist? Using 'if len(fld) < 4:' feels
> > clumsy somehow.
> 
> shlex.split(ln) + ["", ""]
> 
Now that *is* neat, I will probably do this.

-- 
Chris Green
·



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