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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def weld_range(start, stop, step):
 """Create a vector for the range parameters above. Parameters start : int stop : int or WeldObject Could be the lazily computed length of a WeldObject vec. step : int Returns ------- WeldObject Representation of this computation. """

    if isinstance(stop, WeldObject):
        obj_id, weld_obj = create_weld_object(stop)
        stop = obj_id
    else:
        weld_obj = create_empty_weld_object()

    weld_template = """result(
    for(
        rangeiter({start}L, {stop}, {step}L),
        appender[i64],
        |b: appender[i64], i: i64, e: i64| 
            merge(b, e)
    )
)"""

    stop = '{}L'.format(stop) if isinstance(stop, int) else stop

    weld_obj.weld_code = weld_template.format(start=start,
                                              stop=stop,
                                              step=step)

    return weld_obj