Why does argparse return None instead of [] if an append action isn't used?
Ned Batchelder
ned at nedbatchelder.com
Fri Jan 9 10:12:39 EST 2015
On 1/9/15 9:44 AM, Adam Funk wrote:
> This makes it a bit more trouble to use:
>
> if options.bar:
> for b in options:bar
> do_stuff(b)
>
> instead of
>
> for b in options.bar
> do_stuff(b)
This doesn't answer why the value defaults to None, and some people may
recoil at it, but I've used:
for b in options.bar or ():
do_stuff(b)
--
Ned Batchelder, http://nedbatchelder.com
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