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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 param(type):
 """Create a parameter of a particular type to be defined just before execution. Parameters type : dt.DataType The type of the unbound parameter, e.g., double, int64, date, etc. Returns ------- ScalarExpr Examples -------- """

    import ibis.expr.datatypes as dt
    import ibis.expr.operations as ops

    return ops.ScalarParameter(dt.dtype(type)).to_expr()