[Python-Dev] PEP 492 vs. PEP 3152, new round (original) (raw)

Yury Selivanov yselivanov.ml at gmail.com
Thu Apr 30 00:54:49 CEST 2015

Greg,

On 2015-04-29 6:46 PM, Greg Ewing wrote:

Yury Selivanov wrote:

I'm not sure why Greg is pushing his Grammar idea so aggressively. Because I believe that any extra complexity in the grammar needs a very strong justification. It's complexity in the core language, like a new keyword, so it puts a burden on everyone's brain. Saying "I don't think anyone would ever need to write this, therefore we should disallow it" is not enough, given that there is a substantial cost to disallowing it. If you don't think there's a cost, consider that we both seem to be having trouble predicting the consequences of your proposed syntax, and you're the one who invented it. That's not a good sign!

Sorry, but I'm not sure where & when I had any troubles predicting the consequences..

Please take a look at the updated PEP. There is a precedence table there + motivation.

Yury

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