Is string length len, length, size, count, num, or # ? Is there even a global function for length? You won’t know until you try all of them.
This is Python basics, so the argument would be to optimize readability specifically for people who have zero familiarity with the language.
(The other examples have the same general direction of readability tradeoff to the benefit of beginners, this one was just simplest to pick here)
That’s a valid tradeoff to discuss, if discussed as a tradeoff. Here it is not. The cost to readability for anyone with language familiarity appear to be not even understood.
That is one of the points, yes.
But, the reason for wanting the IDE to validate based on partially entered expressions is given as making it easier to follow the code for a person working left-to-right.
And it’s not an invalid thing to want, but I expect the discussion to also include how it affects reading the code for a non-beginner.