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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 probe(self, params):
 """ Evaulates a single point x, to obtain the value y and then records them as observations. Notes ----- If x has been previously seen returns a cached value of y. Parameters x : ndarray a single point, with len(x) == self.dim Returns ------- y : float target function value. """

        x = self._as_array(params)

        try:
            target = self._cache[_hashable(x)]
        except KeyError:
            params = dict(zip(self._keys, x))
            target = self.target_func(**params)
            self.register(x, target)
        return target