Rust for the small things? but what about Python?(dataengineeringcentral.substack.com)

    use std::{
        fs::File,
        io::{BufRead, BufReader, BufWriter, Write},
        time::Instant
    };

    use color_eyre::{eyre::WrapErr, Result};
    use itertools::{Itertools, Position};

    fn main() -> Result<()> {
        color_eyre::install()?;
        let start = Instant::now();

        let path = "foo/bar/baz.txt";
        let tempfile = format!("{path}.tmp");

        let input = File::open(path).wrap_err(format!("Failed to open file: {path}"))?;
        let output = File::create(tempfile).wrap_err("Failed to create output file: {tempfile}")?;

        let reader = BufReader::new(input);
        let mut writer = BufWriter::new(output);
        for (_, line) in reader
            .lines()
            .with_position()
            .filter(|(position, _)| *position == Position::Middle)
        {
            let line = line.wrap_err("Failed to read line")?;
            writeln!(writer, "{line}").wrap_err("Failed to write line")?;
        }

        println!("Elapsed: {:?}", start.elapsed());
        Ok(())
    }

    lines = Path("in.txt").read_text().splitlines()
    trimmed = "\n".join(lines[1: -1])
    Path("out.txt").write_text(trimmed)