Function unpack_from

crates/stdlib/src/pystruct.rs:141–151

(
        fmt: IntoStructFormatBytes,
        args: UpdateFromArgs,
        vm: &VirtualMachine,
    )

    #[pyfunction]
    fn unpack_from(
        fmt: IntoStructFormatBytes,
        args: UpdateFromArgs,
        vm: &VirtualMachine,
    ) -> PyResult<PyTupleRef> {
        let format_spec = fmt.format_spec(vm)?;
        let offset =
            get_buffer_offset(args.buffer.len(), args.offset, format_spec.size, false, vm)?;
        args.buffer
            .with_ref(|buf| format_spec.unpack(&buf[offset..][..format_spec.size], vm))
    }

    #[pyattr]
    #[pyclass(name = "unpack_iterator", traverse)]