Add ruff as formatter for Python

[Bidaya0]

Formatter tool
ruff

Filetype(s)

• python

Additional context

• 10-100x faster
• Ruff can be used to replace Flake8 (plus dozens of plugins), isort, pydocstyle, yesqa, eradicate, pyupgrade, and autoflake, all while executing tens or hundreds of times faster than any individual tool.

[dbarnett]

Hadn't heard about ruff yet but it looks great!

As a formatter, do you know if

• it has built-in support for range formatting (updating only a few target lines out of a file, plus whatever surrounding lines it needs to touch to make a complete valid formatting change)
• its formatting decisions tend to be stable (avoid fighting with existing valid formatting when there are multiple valid ways to format a piece of code, such as a list that's short enough to fit on one line)
  ?

[st1020]

@dbarnett As far as I know, ruff is more of a linter than a formatter. But because it has autofix support, it can also be regarded as a formatting tool (and it also have some rules related to code format).

• Yes and no, ruff not support range formatting as a command line tool, but can support range formatting with ruff-lsp.
• Yes, I think, as a linter, all rules that can be autofixed have only one way to autofix. So it not has "multiple valid ways to format a piece of code".

[Bidaya0]

Hadn't heard about ruff yet but it looks great!

As a formatter, do you know if

• it has built-in support for range formatting (updating only a few target lines out of a file, plus whatever surrounding lines it needs to touch to make a complete valid formatting change)
• its formatting decisions tend to be stable (avoid fighting with existing valid formatting when there are multiple valid ways to format a piece of code, such as a list that's short enough to fit on one line)
  ?

Sorry for the late reply, the situation with the library is basically as described by st1020

• For range formatting, I found a related issue in ruff-lsp, but there is no built-in implementation
• yes, its formatting decisions tend to be stable .