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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 _handle_uninitialized_read(self, addr, inspect=True, events=True):
 """ The default uninitialized read handler. Returns symbolic bytes. """

        if self._uninitialized_read_handler is None:
            v = self.state.solver.Unconstrained("%s_%s" % (self.id, addr), self.width*self.state.arch.byte_width, key=self.variable_key_prefix + (addr,), inspect=inspect, events=events)
            return v.reversed if self.endness == "Iend_LE" else v
        else:
            return self._uninitialized_read_handler(self, addr, inspect=inspect, events=events)