Re: [PATCH v2 02/11] scripts: qapi: black format main.py

[Markus Armbruster <armbru@redhat.com>]

Victor Toso <victortoso@redhat.com> writes:

> On Wed, Oct 18, 2023 at 01:00:07PM +0200, Markus Armbruster wrote:
>> Victor Toso <victortoso@redhat.com> writes:
>> 
>> > flake8 complained:
>> >     ./main.py:60:1: E302 expected 2 blank lines, found 1
>> >
>> > Which is simple enough. My vim has black [0] enabled by default, so it
>> > did some extra formatting. I'm proposing to follow it.
>> >
>> > [0] https://black.readthedocs.io/en/stable/
>> >
>> > Signed-off-by: Victor Toso <victortoso@redhat.com>
>> > ---
>> >  scripts/qapi/main.py | 76 ++++++++++++++++++++++++++++----------------
>> >  1 file changed, 48 insertions(+), 28 deletions(-)
>> 
>> Is this all black hates about scripts/qapi/?
>
> No, just scripts/qapi/main.py.
>
>> Did you configure it in any way, and if yes, how?
>
> Only to reduce line length to 79.
>
> I can do a separate series for this, if the idea is accepted.

Let's build a rough idea of how much churn this would be.

We have a bit over 5000 lines:

    $ wc -l scripts/qapi/*py
       419 scripts/qapi/commands.py
       251 scripts/qapi/common.py
        50 scripts/qapi/error.py
       251 scripts/qapi/events.py
       679 scripts/qapi/expr.py
       368 scripts/qapi/gen.py
       390 scripts/qapi/introspect.py
       103 scripts/qapi/main.py
       777 scripts/qapi/parser.py
      1233 scripts/qapi/schema.py
        71 scripts/qapi/source.py
       387 scripts/qapi/types.py
       429 scripts/qapi/visit.py
      5408 total

Feed them to black:

    $ black -q -l 75 scripts/qapi
    $ git-diff --stat
     scripts/qapi/commands.py   | 448 +++++++++++++++++-----------
     scripts/qapi/common.py     | 240 ++++++++++-----
     scripts/qapi/error.py      |  15 +-
     scripts/qapi/events.py     | 274 +++++++++++-------
     scripts/qapi/expr.py       | 409 ++++++++++++++++----------
     scripts/qapi/gen.py        | 187 +++++++-----
     scripts/qapi/introspect.py | 323 +++++++++++++--------
     scripts/qapi/main.py       |  80 +++--
     scripts/qapi/parser.py     | 370 +++++++++++++----------
     scripts/qapi/schema.py     | 709 +++++++++++++++++++++++++++++----------------
     scripts/qapi/source.py     |  17 +-
     scripts/qapi/types.py      | 369 ++++++++++++++---------
     scripts/qapi/visit.py      | 355 ++++++++++++++---------
     13 files changed, 2383 insertions(+), 1413 deletions(-)

*Ouch*

Peeking at the result, I see string quote normalization.  Try again with
that switched off, and the line length relaxed:

    $ black -q -l 79 -S scripts/qapi
    $ git-diff --stat
     scripts/qapi/commands.py   | 357 +++++++++++++++++++++------------
     scripts/qapi/common.py     | 170 ++++++++++++----
     scripts/qapi/error.py      |  11 +-
     scripts/qapi/events.py     | 220 +++++++++++++-------
     scripts/qapi/expr.py       | 261 +++++++++++++++---------
     scripts/qapi/gen.py        | 114 ++++++-----
     scripts/qapi/introspect.py | 231 +++++++++++++--------
     scripts/qapi/main.py       |  72 ++++---
     scripts/qapi/parser.py     | 224 ++++++++++++---------
     scripts/qapi/schema.py     | 488 +++++++++++++++++++++++++++++++--------------
     scripts/qapi/source.py     |   7 +-
     scripts/qapi/types.py      | 303 ++++++++++++++++++----------
     scripts/qapi/visit.py      | 287 ++++++++++++++++----------
     13 files changed, 1802 insertions(+), 943 deletions(-)

Still massive churn.