Method fmt

crates/vm/src/builtins/set.rs:142–145

(&self, f: &mut fmt::Formatter<'_>)

impl fmt::Debug for PySet {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        // TODO: implement more detailed, non-recursive Debug formatter
        f.write_str("set")
    }
}

impl fmt::Debug for PyFrozenSet {