I dislike adding more operator overload to builtin types.

str is not commutative, but it satisfies a in (a+b), and b in (a+b).

There are no loss.

In case of dict + dict, it not only sum. There may be loss value.

{"a":1} + {"a":2} = ?

In case of a.update(b), it's clear that b wins.

In case of a + b, "which wins" or "exception raised on duplicated key?" is unclear to me.

Regards,

On Thu, Feb 28, 2019 at 1:28 AM João Matos <jcrmatos@gmail.com> wrote:

Hello,

I would like to propose that instead of using this (applies to Py3.5 and upwards)
dict_a = {**dict_a, **dict_b}

we could use
dict_a = dict_a + dict_b

or even better
dict_a += dict_b
Best regards,

João Matos
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