Add StmtKind::Try; fix trailing newlines (#3074)

crates/ruff_python_formatter/src/format/excepthandler.rs

@@ -0,0 +1,46 @@
+use ruff_formatter::prelude::*;
+use ruff_formatter::write;
+use ruff_text_size::TextSize;
+
+use crate::context::ASTFormatContext;
+use crate::cst::{Excepthandler, ExcepthandlerKind};
+use crate::format::builders::block;
+use crate::shared_traits::AsFormat;
+
+pub struct FormatExcepthandler<'a> {
+    item: &'a Excepthandler,
+}
+
+impl AsFormat<ASTFormatContext<'_>> for Excepthandler {
+    type Format<'a> = FormatExcepthandler<'a>;
+
+    fn format(&self) -> Self::Format<'_> {
+        FormatExcepthandler { item: self }
+    }
+}
+
+impl Format<ASTFormatContext<'_>> for FormatExcepthandler<'_> {
+    fn fmt(&self, f: &mut Formatter<ASTFormatContext>) -> FormatResult<()> {
+        let ExcepthandlerKind::ExceptHandler { type_, name, body } = &self.item.node;
+
+        write!(f, [text("except")])?;
+        if let Some(type_) = &type_ {
+            write!(f, [space(), type_.format()])?;
+            if let Some(name) = &name {
+                write!(
+                    f,
+                    [
+                        space(),
+                        text("as"),
+                        space(),
+                        dynamic_text(name, TextSize::default()),
+                    ]
+                )?;
+            }
+        }
+        write!(f, [text(":")])?;
+        write!(f, [block_indent(&block(body))])?;
+
+        Ok(())
+    }
+}