[Python-ideas] Re: PEP 472 - regarding d[x=1, y=2] and similar

On 14/08/20 10:03 pm, Jonathan Fine wrote:

NO POSITIONAL ARGUMENTS I'd like     >>> d[x=1, y=2] to be valid syntax. It's not clear to me that all agree with this.

If keywords are to be allowed, it seems reasonable to me that this should be legal.

>>> d[x=1, y=2] = 42     >>> d[x=1, y=2]     42     >>> d[a='alpha', g='gamma', z=12] = 'cheese'     >>> d[a='alpha', g='gamma', z=12]     'cheese'

My question is this: Should such a class ... be part of standard Python,

Do you have any use cases in mind for this?

To justify being built in, it would need to have a wide range of uses.