Function split

crates/stdlib/src/re.rs:149–159

(
        pattern: PyStrRef,
        string: PyStrRef,
        maxsplit: OptionalArg<PyIntRef>,
        flags: OptionalArg<usize>,
        vm: &VirtualMachine,
    )

    #[pyfunction]
    fn split(
        pattern: PyStrRef,
        string: PyStrRef,
        maxsplit: OptionalArg<PyIntRef>,
        flags: OptionalArg<usize>,
        vm: &VirtualMachine,
    ) -> PyResult {
        let flags = extract_flags(flags);
        let regex = make_regex(vm, pattern.as_str(), flags)?;
        do_split(vm, &regex, string, maxsplit.into_option())
    }

    fn do_sub(pattern: &PyPattern, repl: PyStrRef, search_text: PyStrRef, limit: usize) -> String {
        let out = pattern