Proposal: named return values through dict initialization and unpacking
Michael Selik
michael.selik at gmail.com
Sun Jun 26 14:17:01 EDT 2016
On Tue, Jun 21, 2016 at 9:41 PM Steven D'Aprano <steve at pearwood.info> wrote:
> On Tue, 21 Jun 2016 05:34 pm, Ari Freund wrote:
> > var3, var1, var2 = **d
>
> But I don't want to use the key names your function uses. I want to
> use names which makes sense for my application
>
Note that my dict unpacking syntax proposal would solve this quite nicely.
{'var1': width, 'var2': counter, 'var3': aardvark} = d
But the current syntax ain't so bad either. Maybe it's even better, more
readable despite being less concise.
expected = {'var1', 'var2', 'var3'}
excess = d.keys() - expected
if excess:
raise ValueError('unexpected keys {!r}'.format(excess))
width = d['var1']
counter = d['var2']
aardvark = d['var3']
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