What behavior would you expect?

[Chris Angelico]

On Fri, Feb 20, 2015 at 5:18 PM, Paul Rubin <no.email at nospam.invalid> wrote:
> Empty string would be bad.  Sometimes I like to simulate an option type,
> by returning the value as a 1-element list if there's a value, otherwise
> as an empty list.  So you could say
>
>   filename = get_filename(...)[0]
>
> if you want an exception in the failure case, or you could do something
> like
>
>   fs = get_filename(...)
>   if len(fs) == 0:  ... # didn't get a filename

Bikeshedding: That could be written as simply "if not fs". :)

ChrisA