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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_value(self, value):
 """Set value to action."""

        self._value = value

        for proxy in self.get_proxies():
            proxy.handler_block(self._changed_handlers[proxy])
            proxy.set_value(self._value)
            proxy.handler_unblock(self._changed_handlers[proxy])
            pass

        self.emit('changed')
        return