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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 solve_repeat(expr, vars):
 """Build a repeated value from subexpressions."""

    try:
        result = repeated.meld(*[solve(x, vars).value for x in expr.children])
        return Result(result, ())
    except TypeError:
        raise errors.EfilterTypeError(
            root=expr, query=expr.source,
            message="All values in a repeated value must be of the same type.")