Parser fix

[vincentmacri]

Apparently the more recent Python I tested #166 with locally has features not present on the Python used by the deployment CI.

Also ran the ruff formatter to clean things up a bit.

[haraldschilly]

So, just FYI: I tried this in python3.10, on my computer. single-quotes inside single-quotes trip the parser over. single-quotes in double-quotes, work:

hsy@x2:~$ python3.10
Python 3.10.12 (main, Aug 15 2025, 14:32:43) [GCC 11.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> x = {"asdf" : 123}
>>> print(f"foo {x.get('asdf')}")
foo 123
>>> print(f'foo {x.get('asdf')}')
  File "<stdin>", line 1
    print(f'foo {x.get('asdf')}')
                        ^^^^
SyntaxError: f-string: unmatched '('

Despite that, we can always also tweak the workflow task:

https://github.com/sagemath/website/blob/master/.github/workflows/build.yml

[haraldschilly]

ok, well, thank you for taking your time to improve this ancient code!