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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 set_function(self, f):
 """Call the provided function to return the Gauge value. The function must return a float, and may be called from multiple threads. All other methods of the Gauge become NOOPs. """


        def samples(self):
            return (('', {}, float(f())),)

        self._child_samples = types.MethodType(samples, self)