Re: [PATCH 03/22] qapi/source: Remove line number from QAPISourceInfo initializer

[John Snow]

On 4/24/21 2:38 AM, Markus Armbruster wrote:
> Mixing f-string and % interpolation.  I doubt we'd write it this way
> from scratch.  I recommend to either stick to % for now (leave
> conversion to f-strings for later), or conver the column formatting,
> too, even though it's not related to the patch's purpose.

True. Two thoughts:

1. I don't like using % formatting because it behaves differently from 
.format() and f-strings. My overwhelming desire is to never use it for 
this reason.

Example: {foo} will call foo's __format__ method, whereas "%s" % foo 
will simply add str(foo). They are not always the same, not even for 
built-in Python objects.


2. Cleaning up the formatting here without cleaning it up everywhere is 
a great way to get the patch NACKed. You have in the past been fairly 
reluctant to "While we're here" cleanups, so I am trying to cut back on 
them.


This is why my habit for f-strings keeps trickling in: whenever I have 
to rewrite any interpolation, I reach for the one that behaves most 
idiomatically for Python 3. I am trying to balance that against churn 
that's not in the stated goals of the patch.

In this case: I'll clean the rest of the method to match; and add a note 
to the commit message that explains why. I will get around to removing 
all of the f-strings, but I want to hit the clean linter baseline first 
to help guide the testing for such a series. I regret the awkward 
transitional period.

--js