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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_cast_scalar(scalar, to_weld_type):
 """Returns the scalar casted to the request Weld type. Parameters scalar : {int, float, WeldObject} Input array. to_weld_type : WeldType Type of each element in the input array. Returns ------- WeldObject Representation of this computation. """

    if _not_possible_to_cast(scalar, to_weld_type):
        raise TypeError('Cannot cast scalar of type={} to type={}'.format(type(scalar), to_weld_type))

    weld_obj = create_empty_weld_object()
    if isinstance(scalar, WeldObject):
        scalar = get_weld_obj_id(weld_obj, scalar)

    weld_template = '{type}({scalar})'

    weld_obj.weld_code = weld_template.format(scalar=scalar,
                                              type=to_weld_type)

    return weld_obj