Re: Why does argparse return None instead of [] if an append action isn't used?

[Ned Batchelder]

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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