[Python-ideas] Have dict().update() return its own reference.

Masklinn masklinn at masklinn.net
Fri Apr 20 14:47:34 CEST 2012

On 2012-04-20, at 14:37 , Xavier Ho wrote:

> Thanks, that's fair, for consistency.
> One use case for my question was a stackoverflow question regarding merging
> two dict's.  If update() returned its own reference, and if we explicitly
> wanted a copy (instead of an in-place modification), we could have used
>    dict(x).update(y)
> given x and y are both dict() instances.

If you start from dict instances, you could always use:

    merged = dict(x, **y)

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