On 22/05/2015 1:33 p.m., Ethan Furman wrote:
Going back to the OP:select(c for c in Customer if sum(c.orders.price) > 1000) which compile into and run SQL like this: SELECT "c"."id" FROM "Customer" "c" LEFT JOIN "Order" "order-1" ON "c"."id" = "order-1"."customer" GROUP BY "c"."id" HAVING coalesce(SUM("order-1"."total_price"), 0) > 1000That last code is /not/ Python. ;)
More importantly, it's not Python *semantics*. You can't view it as simply a translation of the Python expression into a different language. I still think this is really a macro facility by a different name. I'm not saying that's a bad thing, just pointing it out. The main difference is that a macro would (or at least could) be expanded at compile time, whereas this would require processing the AST each time it's used. -- Greg _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
