def make_sh_output_script(script_string, witness=False):
    '''
    str -> bytearray
    '''
    if witness and not riemann.network.SEGWIT:
        raise ValueError(
            'Network {} does not support witness scripts.'
            .format(riemann.get_current_network_name()))

    script_bytes = serialization.serialize(script_string)
    return make_sh_script_pubkey(script_bytes=script_bytes, witness=witness)
str -> bytearray