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Mon Jan 26 19:55:58 CET 2015 · https://mail.python.org/pipermail/python-dev/2015-January/137909.html

On 01/26/2015 10:40 AM, Paul Moore wrote:

> There *are* some nastily non-intuitive corner cases (for example, if
> from_env={'a':12} and from_config={'a':13}, I don't have any sort of
> intuition as to what a would be in f(**from_env, **from_config). I'd
> go with 12 because the PEP links multiple **-unpackings with
> collections.ChainMap, but I wouldn't dare rely on that guess).

In the your example

  from_env = {'a': 12}
  from_config = {'a': 13}

  f(**from_env, **from_config)

I would think 'a' should be 13, as from_config is processed /after/ from_env.

So which is it?

--
~Ethan~

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[Python-Dev] Any grammar experts?