Formatter: Yield / YieldFrom (good first issue)

[MichaReiser]

• yield
• yield..from

[MichaReiser]

@qdegraaf has shown interest in working on this

You can find the dummy implementation here

ruff/crates/ruff_python_formatter/src/expression/expr_yield.rs

Lines 1 to 25 in 76e9ce6

	use crate::context::PyFormatContext;
	use crate::expression::parentheses::{NeedsParentheses, OptionalParentheses};
	use crate::{not_yet_implemented, FormatNodeRule, PyFormatter};
	use ruff_formatter::{write, Buffer, FormatResult};
	use ruff_python_ast::node::AnyNodeRef;
	use rustpython_parser::ast::ExprYield;
	#[derive(Default)]
	pub struct FormatExprYield;
	impl FormatNodeRule<ExprYield> for FormatExprYield {
	fn fmt_fields(&self, item: &ExprYield, f: &mut PyFormatter) -> FormatResult<()> {
	write!(f, [not_yet_implemented(item)])
	}
	}
	impl NeedsParentheses for ExprYield {
	fn needs_parentheses(
	&self,
	_parent: AnyNodeRef,
	_context: &PyFormatContext,
	) -> OptionalParentheses {
	OptionalParentheses::Multiline
	}
	}

I recommend taking a look at the raise stmt PR #5595 and/or formatting of await expressions because I assume the formatting would be similar.

Oh, and I should not forget the documentation